Grades 6-8 (Ages 11-13)


Neptune's Triton Triton is a world like no other. Geysers of gas...
Saturn's Moons Saturn has 62 known moons.
Facts and Figures The biggest, farthest and fastest in the...
Remnants from the Beginning Whenever you build a new house, you always have...
Realm of the Giants The region beyond the asteroid belt is the realm...
Exploring Our Own Back Yard The four planets closest to the Sun -- Mercury,...
Mars' Moons Two small moons, Phobos and Deimos, orbit Mars....
Orion, the Hunter Orion is one of the most beautiful of all...
Gemini, the Twins Gemini is easy to find as it glides high...
Canis Major, the Great Dog Canis Major loyally follows its mythical master...
Auriga, the Charioteer Auriga, the celestial charioteer, has neither...
Cassiopeia, the Queen The mythological queen Cassiopeia floats...
Capricornus, the Sea-Goat Capricornus, the sea goat, bounds low across the...
Scorpius, the Scorpion Three bright stars form the "head" of Scorpius,...
Lyra, the Harp It's easy to find Lyra, the harp, by first...
Cygnus, the Swan The brightest stars of Cygnus form a cross, so...
Aquila, the Eagle Aquila glides on outstretched wings through the...
Boötes, the Herdsman The brightest stars of Boötes form a cone shape...
Energy: Tools of the Trade From radio waves to visible light to X-rays,...
Age of the Universe Most astronomers agree that the observable...
Galaxies Fade Eventually, the stars of the Milky Way will burn...
The Local Group The Milky Way galaxy is part of a larger cosmic...
The Milky Way The Milky Way consists of a bulge of stars in...
Galaxy Formation One of the greatest challenges facing...
Types of Galaxies Galaxies can be classified in several ways. The...
Galaxies: Cities of Stars Stars beyond counting populate the universe....
Finding Earth-Like Planets Astronomers have discovered far more planets...
Signs of Life Astronomy may be within a decade or so of...
Exoplanets As the list of known planets beyond the solar...
Black Holes A black hole is invisible, but astronomers can...
Exploding Stars Some types of stars expire with titanic...
Colorful Dwarfs Most of the stars in our Milky Way galaxy are...
Star Color and Energy Stars come in a variety of sizes and colors, but...
Cosmic Beacons The stars that 'twinkle, twinkle' in the night...
Comets With the possible exception of Saturn's rings,...
Explorations of Minor Bodies When Comet Halley last passed through the inner...
Explorations of Outer Planets Pioneer 10 and 11 blazed the trail to the outer...
Explorations of the Inner Solar System The Soviet Union's Luna 3 solved an ancient...
Ongoing Explorations Find out about scheduled missions to our solar...
Virgo Virgo is the second-largest constellation -- so...
Aquarius Thanks to its position in the zodiac, not to...
Cancer, the Crab Although it is one of the constellations of the...
Libra, the Scales Libra represents a balance scale. The name may...
Pisces, the Fish In the lore of the sky, spring is associated...
Aries, the Ram Aries, the ram, is a faint pattern marked by...
The Solar System: Home Sweet Home A middle-aged star, planets large and small,...

Radio Programs

Interferometry IV A whole passel of telescopes Thursday, February 11, 2016
Interferometry III Adding up the telescopes Wednesday, February 10, 2016
Interferometry II Sharpening the view of the stars Tuesday, February 9, 2016
Interferometry Taking the measure of a giant Monday, February 8, 2016
Faint Neighbors Two close but faint neighbors Sunday, February 7, 2016
Lepus Bounding past the hunter’s feet Saturday, February 6, 2016
Luna 9 The first soft landing on the Moon Wednesday, February 3, 2016
Moon and Saturn Scoping out a giant ring Tuesday, February 2, 2016
Moon and Mars Breaking up a small moon Sunday, January 31, 2016
Moon and Companions Stirring up two Martian moons Saturday, January 30, 2016
IC 1396 A busy stellar nursery Thursday, January 28, 2016
Winter Milky Way Adding to the winter Milky Way Wednesday, January 27, 2016
Moon and Regulus A stellar “king” and his entourage Monday, January 25, 2016
Auriga The charioteer’s bright shoulders Sunday, January 24, 2016
Procyon The revenge of the scrawny Saturday, January 23, 2016
Big Dipper Clock Ticking off the hours of the night Friday, January 22, 2016
Comet Doom Debating the end of life on Earth Thursday, January 21, 2016
Doomed Comets Tracking doomed comets — after this. Wednesday, January 20, 2016
Stardust Catching bits of stardust Friday, January 15, 2016
Caroline’s Cluster A surprising star cluster Thursday, January 14, 2016
Aludra The showiest “dog” star of all Wednesday, January 13, 2016
The Dog’s Tail The big dog wags its tail — after this. Tuesday, January 12, 2016
Bigger and Hotter Jacking up a star’s brightness — after this. Monday, January 11, 2016
Sirius Two dogs that are moving apart — after this. Sunday, January 10, 2016
Moon and Jupiter Dropping in on Jupiter Wednesday, December 30, 2015
Going Long Getting to the stars in a hurry Tuesday, December 29, 2015
Going Small Small plans for space exploration Monday, December 28, 2015
Cloudy Skies Cloudy skies across the solar system Sunday, December 27, 2015
Winter Circle Circling around the winter sky Saturday, December 26, 2015
Moon and Aldebaran Looking at the future of the Sun Wednesday, December 23, 2015
Last Visit A final visit to an icy moon Saturday, December 19, 2015
Switching On Switching on the heart of a galaxy Friday, December 18, 2015
Odd Relationship Black holes shut down starbirth Thursday, December 17, 2015
Merging Quasars Pairs of black holes get closer Wednesday, December 16, 2015
Meeting in Space A meet-and-greet in space Tuesday, December 15, 2015
Crab Nebula A crab scuttles across the sky Monday, December 14, 2015
Breaking Down Breaking down lunar soil Sunday, December 13, 2015
Sculptor Looking into a galactic well Thursday, December 10, 2015
More Space Astronomy Climbing above Earth’s murky air Wednesday, December 9, 2015
Astro-1 Astronomy from a cargo bay Tuesday, December 8, 2015
Space Astronomy Changing strategies in space Monday, December 7, 2015
Moon and Venus A spacecraft gets a second chance Sunday, December 6, 2015
Orion Nebula Looking into a cradle of young stars Wednesday, December 2, 2015
Orion Rising A passel of supergiants Monday, November 30, 2015
Eskimo Nebula Seeing the face of a dying star Sunday, November 29, 2015
Moon and Gemini Huddling at the knee of a twin Saturday, November 28, 2015
General Relativity IV Four views of a single quasar Thursday, November 26, 2015
Double Black Hole Stirring up the center of a galaxy Sunday, November 22, 2015
Light-Year Speeding across the universe Friday, November 20, 2015
Planet Land A place to look for lots of planets Thursday, November 19, 2015
Capella A little goat crosses the sky Sunday, November 15, 2015
Runaway Star A stellar “runaway” in the charioteer Saturday, November 14, 2015
Diphda Light from a distant “frog” Friday, November 13, 2015
Pleiades IV Failed stars in a bright cluster Thursday, November 12, 2015
Busy Galaxy The busy, beautiful Milky Way Saturday, November 7, 2015
Moon and Companions A beautiful meeting in the dawn sky Friday, November 6, 2015
Moon and Jupiter From the Big Bang to a big planet Thursday, November 5, 2015
More Planetary Nebulae Works of art from dying stars Wednesday, November 4, 2015
Planetary Nebulae A ghostly planetary doppelganger Tuesday, November 3, 2015
Stellar Death Different ways for a star to die Monday, November 2, 2015
Venus and Mars Planets huddle close in the dawn sky Sunday, November 1, 2015
Moon and Aldebaran Patiently watching the bull’s eye Thursday, October 29, 2015
Cassini at Enceladus Hot water on an icy moon Tuesday, October 27, 2015
Sheratan The hidden nature of a binary star Sunday, October 25, 2015
Morning Trio The first look at a hidden landscape Thursday, October 22, 2015
Homunculus Nebula A giant star blows giant bubbles Wednesday, October 21, 2015
Eta Carinae Impressive stellar siblings Tuesday, October 20, 2015
Enif The bright nose of the winged horse Sunday, October 18, 2015
Tau Ceti De-populating a popular star system Wednesday, October 14, 2015
Hot Planet A world you wouldn’t want to visit Tuesday, October 13, 2015
51 Pegasi A puffy planet gets some attention Monday, October 12, 2015
Alpha Persei A young star ages in a hurry Friday, October 9, 2015
Moon and Companions Bright companions for the Moon Wednesday, October 7, 2015
Double Cluster A pair of vigorous star clusters Monday, October 5, 2015
Faintest Cluster A faint cluster that’s doomed Sunday, October 4, 2015
Rare Gems Yellow gems from the water bearer Saturday, October 3, 2015
More Cosmic Background Taking the universe’s temperature Friday, October 2, 2015
Cosmic Background The crackle of the Big Bang Thursday, October 1, 2015
Blue Snowball An electric-blue wake in the evening sky Wednesday, September 30, 2015
Mirach Stars at opposite ends of the scale Tuesday, September 29, 2015
Big Story A big-screen story in the autumn sky Monday, September 28, 2015
Dabih A dizzying system of stars Wednesday, September 23, 2015
Fomalhaut Grinding up some “dusty” comets Monday, September 21, 2015
Moon and Antares Ticking off the hours of the night Saturday, September 19, 2015
Moon and Saturn Sharing space around Saturn Friday, September 18, 2015
Andromeda Galaxy Taking in all of a giant galaxy Wednesday, September 16, 2015
Waking Up A black hole wakes up hungry Tuesday, September 15, 2015
Eagles Celestial eagles take wing Sunday, September 13, 2015
Alpha Centauri Planet Taking the measure of a planet Saturday, September 12, 2015
Proxima Centauri Planets Planet searches come up empty Friday, September 11, 2015
Proxima Centauri Discovering our closest neighbor Thursday, September 10, 2015
On the Move The Sun circles through the zodiac Sunday, September 6, 2015
Capricornus Bright non-companions in the sea-goat Saturday, September 5, 2015
Luminous Red Novae One star born from two Thursday, September 3, 2015
Hunting Planets IV Patiently looking for planets Saturday, August 29, 2015
Hunting Planets III Looking for big, cold planets Friday, August 28, 2015
Hunting Planets II More nights hunting for planets Thursday, August 27, 2015
Hunting Planets Getting ready to hunt planets Wednesday, August 26, 2015
Messier 22 “Discovering” an ancient star cluster Monday, August 24, 2015
Gemini 5 Powering up for a trip to space Sunday, August 23, 2015
Moon, Saturn, and Antares A stellar weight-loss plan Saturday, August 22, 2015
Polaris Flare A future stellar nursery Thursday, August 20, 2015
Cassini at Dione A final look at a two-faced moon Monday, August 17, 2015
Stellar Tourism Visiting an observatory by stagecoach Sunday, August 16, 2015
Far, Far Away Mapping the distance to the galactic center Friday, August 14, 2015
Galactic Hub Visiting downtown Milky Way Thursday, August 13, 2015
Sagittarius Steaming up the center of the galaxy Wednesday, August 12, 2015
Moon and Betelgeuse Tracking a big, brilliant star Sunday, August 9, 2015
Quick Change A star that’s changing in a hurry Saturday, August 8, 2015
Moon and Aldebaran Similar but different lights near the Moon Friday, August 7, 2015
Making a Magnetar Making a powerful magnet Thursday, August 6, 2015
Magnetars Powering up some strong magnets Wednesday, August 5, 2015
Delta Cephei A surprise from a well-known star Monday, August 3, 2015
Energy Hogs Looking for signs of a super-civilization Sunday, August 2, 2015
Delta Cygni Spreading out a stellar trio Friday, July 31, 2015
Noctilucent Clouds Electric-blue clouds in the twilight Monday, July 27, 2015
Moon, Saturn, Antares A star of the first magnitude Sunday, July 26, 2015
Future Outbursts Setting up future outbursts Friday, July 24, 2015
Bread Crumbs Leaving a trail of breadcrumbs Thursday, July 23, 2015
Emptiness Vast “voids” between galaxies Tuesday, July 21, 2015
Fermi Bubbles Blowing bubbles in the Milky Way Monday, July 20, 2015
The Stinger The scorpion’s bright stinger Sunday, July 19, 2015
First Stars II Brilliant clusters in the early universe Friday, July 17, 2015
The First Stars Whipping up the first stars Thursday, July 16, 2015
Stellar Metals A difference between young and old stars Wednesday, July 15, 2015
More Mariner 4 Changing the concept of Mars Tuesday, July 14, 2015
Mariner 4 Getting the first good look at Mars Monday, July 13, 2015
Stairsteps Stepping up the evening sky Sunday, July 12, 2015
Moon and Aldebaran Igniting the core of a star Saturday, July 11, 2015
New Horizons II Getting to know a new world Friday, July 10, 2015
New Horizons Transforming a distant world Thursday, July 9, 2015
Pluto’s Moons A small world with a big moon Wednesday, July 8, 2015
Kuiper Belt “Little guys” at the edge of the solar system Monday, July 6, 2015
Earth at Aphelion Stretching out the summer Sunday, July 5, 2015
Moon and Saturn Giant storms on a giant world Sunday, June 28, 2015
Deceptive Giant A star that’s more impressive than it looks Saturday, June 27, 2015
Martian Methane Tracking down Martian methane Tuesday, June 23, 2015
Methane Powering the search for life Monday, June 22, 2015
June Solstice Celebrating the June solstice Sunday, June 21, 2015
Doomed Stars Two stars with a bright future Wednesday, June 17, 2015
Kochab A former pole star keeps watch Sunday, June 14, 2015
Thuban Lining up an ancient wonder Saturday, June 13, 2015
Doomed Planets Planets with limited lifetimes Friday, June 12, 2015
Day and Night Day and night on distant planets Thursday, June 11, 2015
Living in Circles The intelligent choice for planetary systems Wednesday, June 10, 2015
Exoplanets An astounding variety of planets Tuesday, June 9, 2015
Second Generation A second generation of planets Monday, June 8, 2015
Venus in the Beehive Closing in on a beehive Sunday, June 7, 2015
Vega A middle-aged star with a difference Saturday, June 6, 2015
Gemini 4 Floating into the history books Wednesday, June 3, 2015
One-Two Punch Space rocks pummel Australia Saturday, May 30, 2015
Early Beacon A bright beacon in the early universe Friday, May 29, 2015
Quasars An astronomical contradiction Thursday, May 28, 2015
False Alarm A hint of an interstellar radio station Wednesday, May 27, 2015
Omega Centauri Alien visitors from other galaxies Tuesday, May 26, 2015
Alpha Centauri Putting three stars on the scales Monday, May 25, 2015
Moon and Leo “Weighing” two giant stars Sunday, May 24, 2015
Moon and Jupiter Jupiter loses its status Saturday, May 23, 2015
Saturn at Opposition III Drawing rings around a giant planet Wednesday, May 20, 2015
Saturn at Opposition II Possible habitats on distant moons Tuesday, May 19, 2015
Saturn at Opposition A big show for a big planet Monday, May 18, 2015
Rising Serpent Piecing together a celestial snake Saturday, May 16, 2015
Starry Spokes Circling the hub of the northern sky Friday, May 15, 2015
Hercules Cluster Stirring up a cluster of galaxies Thursday, May 14, 2015
M92 An ancient family of stars Wednesday, May 13, 2015
M13 A cluster of old, faint stars Tuesday, May 12, 2015
Hercules Handing down pictures of the stars Monday, May 11, 2015
North Poles Looking north from the Milky Way Saturday, May 9, 2015
Dark Danger A dangerous passage through the galaxy Friday, May 8, 2015
Former Neighbor Discovering a one-time neighbor Thursday, May 7, 2015
Fast Neighbor A “runaway train” in the stars Wednesday, May 6, 2015
Moon and Companions A giant star hides in plain sight Tuesday, May 5, 2015
Solar Nap The Sun takes a long nap Thursday, April 30, 2015
M87 Cluster A cosmic bullet from a black hole Saturday, April 25, 2015
Hubble at 25 III A quarter-century of discoveries Friday, April 24, 2015
Hubble at 25 II The “blunder of the century” Thursday, April 23, 2015
Hubble at 25 Hubble Space Telescope takes flight Wednesday, April 22, 2015
Future Quadruplets A star cloud prepares to give birth Thursday, April 16, 2015
Venus and Aldebaran Battle of the sexes in the evening sky Wednesday, April 15, 2015
Crackling Star Keeping an eye on a faint but busy star Tuesday, April 14, 2015
The Search Continues The search for planets continues Monday, April 13, 2015
Galactic Companions Like looking in a galactic mirror Sunday, April 12, 2015
Local Environment Bubbles and clouds around the solar system Saturday, April 11, 2015
Interstellar Clouds Looking into cloudy evening skies Friday, April 10, 2015
Interstellar Medium Filling the space between stars Thursday, April 9, 2015
Moon, Saturn, and Antares Gazing at a star among stars Wednesday, April 8, 2015
Moon and Saturn Saturn’s ever-changing rings Tuesday, April 7, 2015
The Next Phase 99 days to Pluto Monday, April 6, 2015
Twin Monsters Giving life to a classic story Sunday, April 5, 2015
Moon and Spica Dipping up water on the Moon Saturday, April 4, 2015
Beryllium A key element in fact and fantasy Wednesday, April 1, 2015
Moon and Regulus The intertwined lives of two stars Monday, March 30, 2015
African Astronomy III Blue flashes from the distant universe Friday, March 27, 2015
African Astronomy II New uses for old radio dishes Thursday, March 26, 2015
African Astronomy Changing views of southern skies Wednesday, March 25, 2015
Spring Storm Making a mess of Easter Sunday Tuesday, March 24, 2015
Alphard A long but barren constellation Monday, March 23, 2015
Small Steps Small steps in the exploration of space Wednesday, March 18, 2015
M3 Reinvigorating some old stars Tuesday, March 17, 2015
The Hunting Dogs A pair of hunting dogs without much bite Monday, March 16, 2015
MY Camelopardalis A brilliant duet for the giraffe Sunday, March 15, 2015
Moon and Saturn Swimming through a “death star” Wednesday, March 11, 2015
Pandora’s Cluster Mapping a galactic pile-up Tuesday, March 10, 2015
On the Frontier Pushing the intergalactic frontier Monday, March 9, 2015
Arcturus Measuring the girth of a big star Saturday, March 7, 2015
More Dawn at Ceres Looking for water on an asteroid Thursday, March 5, 2015
Dawn at Ceres A spacecraft makes a second port of call Wednesday, March 4, 2015
Moon and Regulus A royal heart for a royal beast Tuesday, March 3, 2015
Seeing the Past Looking at the solar system’s past Sunday, March 1, 2015
Beta Cassiopeia Watching a star puff up Saturday, February 28, 2015
Hints of Life Hints of life in more Mars rocks Friday, February 27, 2015
Fewer New Stars A decline in the stellar birth rate Thursday, February 26, 2015
Moon and Aldebaran The cool glow of a bright star Wednesday, February 25, 2015
Canopus III Navigating by a bright star Tuesday, February 24, 2015
Canopus II Pinning down a giant star Monday, February 23, 2015
Canopus Sailing across southern skies Sunday, February 22, 2015
Triple Play II Two very different neighbors Friday, February 20, 2015
Triple Play A triple play in the evening sky Thursday, February 19, 2015
Winter Milky Way Looking toward the galaxy’s outskirts Tuesday, February 17, 2015
Spiral Galaxies Pinwheels and whirlpools Monday, February 16, 2015
Cancer Grabbing a toe was a bad idea Sunday, February 15, 2015
Bright Paw The big dog’s brilliant paw Friday, February 13, 2015
Morning Moon A bright future for the scorpion Thursday, February 12, 2015
Bright Merger The fireworks of a hostile takeover Wednesday, February 11, 2015
Beta Monocerotis A brilliant set of triplets Tuesday, February 10, 2015
Seeing Red Seeing red from a dying star Saturday, February 7, 2015
Iron Ironing out a heavy element Thursday, February 5, 2015
Moon and Jupiter “Warping” the heart of a planet Monday, February 2, 2015
Brackets Bright lights bracket the evening sky Sunday, February 1, 2015
Winter Circle A brilliant ring around the Moon Friday, January 30, 2015
Procyon One dog leads another across the sky Saturday, January 24, 2015
Binary Planets Two planets for the price of one Tuesday, January 20, 2015
Filling the Void Filling the intergalactic void Monday, January 19, 2015
Orion’s Head Heading for the top of the hunter Sunday, January 18, 2015
Trapezium Lighting up a galactic trapeze Saturday, January 17, 2015
Moon and Saturn Filling up a giant gas station Thursday, January 15, 2015
Huygens Parachuting through alien skies Wednesday, January 14, 2015
Close Escape A black hole snacks on a star Tuesday, January 13, 2015
Survivor The heart of the galaxy stays quiet Monday, January 12, 2015
Johannes Hartmann Filling the space between the stars Sunday, January 11, 2015
First Glimpse Ready for a first look at Pluto Friday, January 9, 2015
Icy Time Capsules Refugees from the realm of the giants Thursday, January 8, 2015
Moon and Jupiter Closing in on two dwarf planets Wednesday, January 7, 2015
Eris Reflections on a bright dwarf planet Tuesday, January 6, 2015
Dwarf Planets A new name for leftover building blocks Monday, January 5, 2015
Sirius Rising The Dog Star climbs into winter evenings Sunday, January 4, 2015
Close to the Sun Snuggling close to the Sun Saturday, January 3, 2015
Moon and Aldebaran A game of cat and mouse in the night sky Thursday, January 1, 2015
Lunar Giant A giant scar on the Moon’s backside Tuesday, December 30, 2014
Hailstorm The inner planets take a beating Monday, December 29, 2014
Alhena The bright foot of a celestial twin Sunday, December 28, 2014
Gemini Rising The impressive celestial twins Saturday, December 27, 2014
Hot Weather Hot weather on a distant planet Friday, December 26, 2014
More Rigel Clearing space around a giant star Tuesday, December 23, 2014
Rigel The hunter’s complicated foot Monday, December 22, 2014
Deep Vision Looking deep into the universe Saturday, December 20, 2014
More Moon and Saturn Taming some small moons of Saturn Friday, December 19, 2014
Distant Neighbors The Milky Way’s lonely outskirts Wednesday, December 17, 2014
Moon and Spica Eyeballing some changes in the sky Tuesday, December 16, 2014
Earliest Sunsets Stretching out the sunsets Monday, December 15, 2014
Cetus A sea monster fit for Hollywood Sunday, December 14, 2014
Moon and Companions Cracking the surface of the Moon Thursday, December 11, 2014
Moon and Jupiter Measuring the solar system with a ruler Wednesday, December 10, 2014
Rising Dipper A brief disappearance for the Big Dipper Sunday, December 7, 2014
Moon and Aldebaran A 20-parsec jaunt across the galaxy Friday, December 5, 2014
Smash-up! A smash-up in a distant star system Thursday, December 4, 2014
Superflares A big outburst from a tiny star Wednesday, December 3, 2014
Fast Day A planet that spins in a hurry Tuesday, December 2, 2014
Rara Avis II Dancing with the firebird Sunday, November 30, 2014
Tadpole Galaxies The inside-out heads of tadpole galaxies Friday, November 28, 2014
Tadpole Galaxy A tadpole swims near the dragon Thursday, November 27, 2014
Galaxy Mergers When galaxies collide Wednesday, November 26, 2014
Orion Returns The return of an astronomical beauty Monday, November 24, 2014
Epsilon Aurigae Playing Frisbee with a bright star Sunday, November 23, 2014
Wang Liang A bright warrior in the northern sky Saturday, November 22, 2014
More Edwin Hubble Discovering the expanding universe Friday, November 21, 2014
Edwin Hubble A memento of a college basketball star Thursday, November 20, 2014
Big Bang Starting a universe with a bang Wednesday, November 19, 2014
COBE Deciphering the static of the early universe Tuesday, November 18, 2014
Great Wall A wall of galaxies across the universe Monday, November 17, 2014
Moon and Companions Feeble companions for a bright star Friday, November 14, 2014
Making Methane Too much methane on a big moon Wednesday, November 12, 2014
Changing Seasons Changing seasons on a cold world Tuesday, November 11, 2014
Cloudy Skies Cloudy skies on a cold moon Monday, November 10, 2014
Through the Haze Seeing through the haze on a cold moon Sunday, November 9, 2014
Moon and Betelgeuse The “messy” space around a giant star Saturday, November 8, 2014
Brightest The brightest outbursts in the universe Thursday, November 6, 2014
Brighter A bright star gets even brighter Tuesday, November 4, 2014
Morning Mercury Getting closer to a little planet Thursday, October 30, 2014
Local Bubble Clearing out interstellar space Wednesday, October 29, 2014
More Capella Bright giants with a shared evolution Sunday, October 26, 2014
Capella Guiding the way to a horn of plenty Saturday, October 25, 2014
New Names Spicing up the names of distant worlds Monday, October 20, 2014
Close to Mars II Hiding behind the Red Planet Friday, October 17, 2014
Sadr A case of stellar WYSIWYG Tuesday, October 14, 2014
Close to the End A Venus-watching spacecraft nears its end Monday, October 13, 2014
The Elephant’s Trunk An elephant’s trunk in the northern sky Sunday, October 12, 2014
Moon and Aldebaran Avoiding a celestial collision Saturday, October 11, 2014
Black Hole Reality The reality about black holes Friday, October 10, 2014
Event Horizon An astronomical point of no return Thursday, October 9, 2014
Three-Headed Monster A trio of giant black holes Wednesday, October 8, 2014
Celestial Sea The Moon swims in the Celestial Sea Sunday, October 5, 2014
Maffei 1 A bright galaxy hides behind a veil of dust Saturday, October 4, 2014
Fomalhaut III Taking a look at a possible “dusty” planet Friday, October 3, 2014
Fomalhaut II Faint companions for a bright star Thursday, October 2, 2014
Fomalhaut Watching one of the “guardians of heaven” Wednesday, October 1, 2014
Distant Hub Looking into the past of our home galaxy Tuesday, September 30, 2014
Moon, Mars, and Antares Heating up the daytime sky Monday, September 29, 2014
Moon and Planets Profiling undiscovered moons Sunday, September 28, 2014
Moon and Saturn Building a new moon around Saturn Saturday, September 27, 2014
Mars and Antares Coloring in two bright pinpoints Thursday, September 25, 2014
Biggest of the Big The monsters of the Milky Way Tuesday, September 23, 2014
Autumnal Equinox One way to mark a change in seasons Monday, September 22, 2014
Moon and Regulus Keeping an old star looking young Saturday, September 20, 2014
Moon and Companions The little dog leads the big dog Thursday, September 18, 2014
Moon and Taurus Families of stars flank the Moon Saturday, September 13, 2014
EQ Pegasi A pair of juvenile stellar neighbors Friday, September 12, 2014
M15 A fading family of ancient stars Thursday, September 11, 2014
Rasalhague The head of the serpent bearer Sunday, September 7, 2014
Ophiuchus The 13th constellation of the zodiac Saturday, September 6, 2014
World War II, Part III Science and service in World War II Thursday, September 4, 2014
World War II, Part II European astronomy during the war Wednesday, September 3, 2014
World War II Heading toward World War II Tuesday, September 2, 2014
Paper Black Holes Laying the groundwork for black holes Monday, September 1, 2014
Moon and Planets Ringing out the weekend Sunday, August 31, 2014
Panhu A country that’s gone to the dogs Saturday, August 30, 2014
Cat’s Eye Nebula The true nature of a glowing cat’s eye Friday, August 29, 2014
Moons of Neptune Moons come, moons go Tuesday, August 26, 2014
Voyager 2 at Neptune A first glance at a giant world Monday, August 25, 2014
Doomed Planets Doomed planets around a dying star Sunday, August 24, 2014
Planet Bonanza A plenitude of exoplanets Saturday, August 23, 2014
Planet Pairings Pairs of planets bracket the Sun Saturday, August 16, 2014
Venus and Jupiter A cold layer cake for a big moon Friday, August 15, 2014
Little Pictures Little star pictures in the summer sky Thursday, August 14, 2014
Powerful Jets Powerful jets from massive black holes Tuesday, August 12, 2014
Construction Zone A busy construction zone around a star Monday, August 11, 2014
Sigma Scorpii Impressive stars near the scorpion’s heart Saturday, August 9, 2014
New Searches Taking a closer look at exoplanets Friday, August 8, 2014
The Neighborhood Getting to know the neighbors Thursday, August 7, 2014
RECONS Taking a census of our stellar neighborhood Wednesday, August 6, 2014
Moon and Antares Inflating a stellar supergiant Tuesday, August 5, 2014
Moon and Saturn Saturn’s moons take a beating Monday, August 4, 2014
Moon and Companions The scorpion’s southern claw Sunday, August 3, 2014
Lunar Checkers The Moon plays a game of checkers Friday, August 1, 2014
Ranger 7 A successful crash in the Moon Race Thursday, July 31, 2014
Dark Center Darkness in the heart of the galaxy Tuesday, July 29, 2014
The Brick Building a future stellar nursery Monday, July 28, 2014
Galactic Track A roller-coaster ride around the galaxy Sunday, July 27, 2014
Old Family Looking into an old stellar family Saturday, July 26, 2014
Messier Clusters Logging star clusters in Sagittarius Friday, July 25, 2014
Outcast Star A stellar outcast in the Big Dipper Tuesday, July 22, 2014
Moon and Aldebaran Changing a delicate balancing act Monday, July 21, 2014
Spearhead Spearheading a look at the Seven Sisters Sunday, July 20, 2014
Impact! Cosmic missiles slam into Jupiter Wednesday, July 16, 2014
Magellanic Collision New stars from a galactic collision Tuesday, July 15, 2014
Magellanic Clouds A new view of two close neighbors Monday, July 14, 2014
Dumbbell Nebula A blaze of color for a dying star Saturday, July 12, 2014
Venus and Mercury Bright, hot planets in the dawn sky Friday, July 11, 2014
Mars and Spica Two lights passing in the night sky Thursday, July 10, 2014
Vega A glittering test subject in the summer sky Wednesday, July 9, 2014
Moon and Antares Siblings that age at different rates Tuesday, July 8, 2014
Moon and Saturn Names for all the solar system Monday, July 7, 2014
Chameleon Star A star that’s changing colors Sunday, July 6, 2014
Fresh Ideas Looking for fresh ideas Thursday, July 3, 2014
Pitching Ideas Pitching ideas for new missions Wednesday, July 2, 2014
Alphecca Stellar siblings with different futures Saturday, June 28, 2014
Space Telescopes Studying the universe from on high Friday, June 27, 2014
Lyman Spitzer II A bold idea for exploring the universe Thursday, June 26, 2014
Serpens South Young stars that are hidden from view Tuesday, June 24, 2014
Close Quartet A nearby stellar quartet Sunday, June 22, 2014
Eagle Nebula Inspirational beauty in the southern sky Saturday, June 21, 2014
Oxygen Breathing a creation of the stars Thursday, June 19, 2014
Eta Carinae III The spectacular death of a giant star Wednesday, June 18, 2014
Eta Carinae II Aggravating a supergiant star Tuesday, June 17, 2014
Eta Carinae Building up to a big eruption Monday, June 16, 2014
Disappearing Family A bright family drops from view Saturday, June 14, 2014
Moon and Antares The amazing fate of a giant star Wednesday, June 11, 2014
Moon and Saturn Arriving at a fascinating destination Tuesday, June 10, 2014
Moon and Mars Evidence of life in a rock from Mars Friday, June 6, 2014
Rebuilding Rebuilding astronomical history Thursday, June 5, 2014
Clark Telescopes Celebrating some astronomical masterpieces Wednesday, June 4, 2014
Moon and Regulus A stellar whirling dervish Tuesday, June 3, 2014
Disappearing Cluster An evaporating star cluster Monday, June 2, 2014
Companionship Looking for stellar companions Thursday, May 29, 2014
Messier 3 Tracking down false comets Wednesday, May 28, 2014
Hercules Cluster A starry realm without night Tuesday, May 27, 2014
Globular Clusters Stellar neighborhoods where it never gets dark Monday, May 26, 2014
Leo T A tiny galaxy with bright ambitions Sunday, May 25, 2014
Distant Neighbors Looking for distant neighbors Wednesday, May 21, 2014
Distant Realms A realm of iceballs far from the Sun Tuesday, May 20, 2014
Distant Borders Crossing a distant border Monday, May 19, 2014
Too Close Getting too close to a dark monster Sunday, May 18, 2014
Rasalhague A preview of coming attractions Saturday, May 17, 2014
More Saturn at Opposition Churning the seas of another world Tuesday, May 13, 2014
Moon and Mars Digging holes on other worlds Saturday, May 10, 2014
McDonald at 75, V Studying the mysteries of the universe Friday, May 9, 2014
McDonald at 75, IV Probing the mysteries of the stars Thursday, May 8, 2014
McDonald at 75, III Collaboration in the name of science Wednesday, May 7, 2014
McDonald at 75, II Lawsuits, recruitment, and stars Tuesday, May 6, 2014
McDonald at 75 The start of a scientific adventure Monday, May 5, 2014
Watery Asteroid Water vapor from a big ball of rock Friday, May 2, 2014
Distant Planets IV Young planets on the move Thursday, May 1, 2014
Distant Planets III A giant planet near the head of the water snake Wednesday, April 30, 2014
Distant Planets II A patient search for distant planets Tuesday, April 29, 2014
Distant Planets Looking for hard-to-find planets Monday, April 28, 2014
Loopy Planet A planet gets a little loopy Sunday, April 27, 2014
Beta Coma Berenices A star that’s a lot like our own Saturday, April 26, 2014
61 Virginis Some nearby planetary neighbors Friday, April 25, 2014
Moon and Venus Racking up the frequent-flyer miles Thursday, April 24, 2014
Space Fair A world’s fair for the Space Age Tuesday, April 22, 2014
Emptiness The emptiness between the stars Monday, April 21, 2014
Bear’s Lodge Looking down from the Big Dipper Saturday, April 19, 2014
Moon and Saturn A varied entourage of moons Wednesday, April 16, 2014
Bright and Fast A bright star that’s in a hurry Tuesday, April 15, 2014
Runaway Stars Stars that are leaving home in a hurry Friday, April 11, 2014
Black Widow Pulsars Celestial creepy-crawlies Thursday, April 10, 2014
Mars at Opposition II Catching the sunrise on Mars Tuesday, April 8, 2014
Moon and Jupiter Winging through the skies of Jupiter Sunday, April 6, 2014
Stepping Stone A long trip to nowhere Friday, April 4, 2014
To the Stars A tall ship and a star to sail her by Thursday, April 3, 2014
Fermi’s Paradox Where are all the little green men? Wednesday, April 2, 2014
Glowing Aliens Warming up to alien civilizations Tuesday, April 1, 2014
Lithopanspermia Catching a ride to the outer solar system Monday, March 31, 2014
‘Minor’ Constellations “Minor” constellations with major sights Sunday, March 30, 2014
Mariner 10 at Mercury A first look at a little planet Saturday, March 29, 2014
Spring Milky Way The Milky Way brackets the night sky Friday, March 28, 2014
Galactic Archaeology Digging into the history of the galaxy Monday, March 24, 2014
Crow and Cup The crow gets in a spot of bother Sunday, March 23, 2014
Heart of Charles Stirring up the Heart of Charles Saturday, March 22, 2014
Moon and Antares A journey to a stellar supergiant Friday, March 21, 2014
Spring Equinox Projecting the spring equinox Thursday, March 20, 2014
Moon and More Companions Taking aim at the scorpion’s claw Wednesday, March 19, 2014
Moon and Regulus Bright flashes on the surface of the Moon Thursday, March 13, 2014
Blackout! The Sun turns out the lights Wednesday, March 12, 2014
Quaoar Measuring a distance ice-ball Tuesday, March 11, 2014
Moon and Aldebaran Keeping an eye on the bull’s eye Friday, March 7, 2014
K2 Plan K2 from outer space Thursday, March 6, 2014
Double Duty A space telescope does double duty Wednesday, March 5, 2014
In-Between Planets Super-Earths and mini-Neptunes Tuesday, March 4, 2014
Kepler A space telescope piles up the planets Monday, March 3, 2014
Pollux A “wobbly” planetary discovery Sunday, March 2, 2014
Castor Rare sextuplets among the stars Saturday, March 1, 2014
Rosette Nebula A colorful stellar birthplace Friday, February 28, 2014
Cone Nebula A small, dark “horn” for the unicorn Thursday, February 27, 2014
NGC 2264 Lighting up a stellar nursery Wednesday, February 26, 2014
Monoceros A vision in blue in the unicorn Tuesday, February 25, 2014
Zeta Cas A star that's far above average Sunday, February 23, 2014
Earths Galore Earth-like planets by the millions Saturday, February 22, 2014
Moon and Saturn Sculpting the rings of Saturn Thursday, February 20, 2014
Moon and Mars A garden spot on the Red Planet Wednesday, February 19, 2014
Alnilam A bright buckle for the hunter’s belt Sunday, February 16, 2014
Dubhe A bright orphan in the Big Dipper Saturday, February 15, 2014
Moon and Regulus Busy times for the Moon Friday, February 14, 2014
Fast Radio Bursts Mysterious outbursts of radio waves Wednesday, February 12, 2014
Outbursts Flickering lights in the night sky Tuesday, February 11, 2014
Hint of Spring A hint of spring in the evening sky Sunday, February 9, 2014
Rivals Separating a pair of mortal enemies Saturday, February 8, 2014
Moon and Aldebaran Taking the measure of the bull’s eye Friday, February 7, 2014
Z Machine IV Astronomy in a test tube Thursday, February 6, 2014
Z Machine III Making a star in a bottle Wednesday, February 5, 2014
Southern Slivers Slivers of stars in the southern sky Sunday, February 2, 2014
Adhara A different view of a hot star Thursday, January 30, 2014
Wezen Dumping chemicals into space Wednesday, January 29, 2014
Mirzam Revving up a celestial dog Tuesday, January 28, 2014
California Nebula California in the stars Saturday, January 25, 2014
Orion Nebula A busy stellar nursery Thursday, January 23, 2014
Canopus Navigating by a special star Monday, January 20, 2014
Evening Clusters Star clusters for the charioteer Sunday, January 19, 2014
M101 ULX-1 Weirdness in a nearby galaxy Thursday, January 16, 2014
Black Hole Collisions Tiny threats rip through Earth Wednesday, January 15, 2014
Hot Weather Hot weather on failed stars Monday, January 13, 2014
Earth Impacts IV Going to work for planetary defense Thursday, January 9, 2014
Earth Impacts III Violence and beauty in the Sahara Wednesday, January 8, 2014
Earth Impacts II Kick starting an Ice Age Tuesday, January 7, 2014
Earth Impacts The scars of a celestial pounding Monday, January 6, 2014
Mars Exploration Rovers Two visitors for the planet Mars Saturday, January 4, 2014
Getting Close Snuggling close to two giants Friday, January 3, 2014
Stardust Catching bits of comet dust Wednesday, January 1, 2014
Getting Started Cooking up a piece of glass Tuesday, December 31, 2013
Life of Procyon The life of the Little Dog Star Saturday, December 28, 2013
Comet Flop A good view of a cometary dud Thursday, December 26, 2013
Moon and Companions Sniffing out life on Mars Wednesday, December 25, 2013
Moon and Mars Mars gets a holiday visitor Tuesday, December 24, 2013
Golden Mergers Mining gold from a black hole Monday, December 23, 2013
Moon and Regulus Beating up the surface of the Moon Sunday, December 22, 2013
Winter Solstice Drawing up the winter solstice Saturday, December 21, 2013
EX Hydrae Two small but busy stars Thursday, December 19, 2013
NGC 660 The glow of escaping table scraps Tuesday, December 17, 2013
Moon and Aldebaran Looking for a place to settle down Sunday, December 15, 2013
More Aquarius A pair of yellow supergiants Sunday, December 8, 2013
Aquarius Freezing a celestial water jug Saturday, December 7, 2013
Sirius Rising The right season for the Dog Star Friday, December 6, 2013
Fixing Hubble Improving Hubble’s eyesight Thursday, December 5, 2013
Pioneer 10 at Jupiter Going eye-to-eye with a giant Tuesday, December 3, 2013
Blue-Hot Planet A visit to another blue planet Monday, December 2, 2013
Moon and Planets Two planets wander across the sky Saturday, November 30, 2013
Escaped Star A star that escaped from its nest Friday, November 29, 2013
Sunward Bound A comet blazes toward the Sun Wednesday, November 27, 2013
Moon and Companions Growing fresh veggies on the Moon Monday, November 25, 2013
Dawn Planets Siblings with no family resemblance Sunday, November 24, 2013
Uncertain Giant Taking the measure of a giant star Saturday, November 23, 2013
Orion Rising Jumbo stars climb into view Friday, November 22, 2013
More Moon and Jupiter Patching up the night sky Thursday, November 21, 2013
Moon and Jupiter Centering up a bright duo Wednesday, November 20, 2013
Capella A pair of bright, “puffy” stars Tuesday, November 19, 2013
Moon and Aldebaran Building mountains on the Moon Monday, November 18, 2013
William Herschel III Dangerous nights at the telescope Saturday, November 16, 2013
William Herschel II Making up for lost time Friday, November 15, 2013
William Herschel A musical intro for a noted astronomer Thursday, November 14, 2013
Antarctic Adventures III The dark skies of the Antarctic Wednesday, November 13, 2013
Antarctic Adventures II Cruising above the Antarctic ice Tuesday, November 12, 2013
Triangulum Galaxy A galaxy that’s losing its identity Sunday, November 10, 2013
Andromeda Galaxy III Building a galactic giant Saturday, November 9, 2013
Andromeda Galaxy II Black holes in a neighboring galaxy Friday, November 8, 2013
Andromeda Galaxy A journey into the distant past Thursday, November 7, 2013
Andromeda A colorful stellar quartet Wednesday, November 6, 2013
HETDEX Update An upgrade for dark energy Monday, November 4, 2013
Distant Cloud A remnant of the Big Bang Sunday, November 3, 2013
Getting Closer A comet streaks toward the Sun Friday, November 1, 2013
Under Attack Earth is attacked by a star Tuesday, October 29, 2013
Moon and Company An effective type of sun block Sunday, October 27, 2013
The Disrespected Two “slithery” constellations Saturday, October 26, 2013
More Moon and Jupiter Wrapping a spacecraft in plastic Friday, October 25, 2013
Abu Simbel Lighting an ancient sanctuary Saturday, October 19, 2013
Carbon Monoxide Tracing the birth of stars Thursday, October 17, 2013
Venus and Antares Losing a “summer” star Wednesday, October 16, 2013
More Fomalhaut A giant planet of mystery Tuesday, October 15, 2013
Fomalhaut Surprises from a well-studied star Monday, October 14, 2013
Mars and Regulus Wandering across the night sky Sunday, October 13, 2013
Pleiades White Dwarf A star that went gently into the night Saturday, October 12, 2013
Juno at Earth Getting a boost from home Tuesday, October 8, 2013
Moon and Venus Paving the surfaces of two worlds Monday, October 7, 2013
Merging Stars Two stars that become one Saturday, October 5, 2013
Gaia Counting up the stars Thursday, October 3, 2013
Uranus at Opposition II A giant entourage for a giant planet Wednesday, October 2, 2013
Moon and Mars Gentle giants on the planet Mars Sunday, September 29, 2013
Moon and Jupiter Looking for a giant planet Saturday, September 28, 2013
ER Vulpeculae Two stars locked in a tight embrace Friday, September 27, 2013
The Coathanger Gazing deep into a coat hanger Thursday, September 26, 2013
NGC 7052 Livening up a dull galaxy Wednesday, September 25, 2013
Dumbbell Nebula A colorful final act Tuesday, September 24, 2013
Vulpecula The fox and goose in the night sky Monday, September 23, 2013
Journey’s End A long journey comes to an end Saturday, September 21, 2013
Slowing Down A dead star slows down Friday, September 20, 2013
Whistlers Listening for stormy skies Thursday, September 19, 2013
To the Stars Building a road to the stars Tuesday, September 17, 2013
Venus and Saturn Windy planets in the evening sky Monday, September 16, 2013
Star Names The language of the stars Saturday, September 14, 2013
Friday the Thirteenth A day with an undeserved reputation Friday, September 13, 2013
Alpheratz One star, two constellations Thursday, September 12, 2013
Moon and Antares A bubbly stellar supergiant Wednesday, September 11, 2013
Moon and Saturn A planet with a nameless surface Monday, September 9, 2013
Vega Stands High Crowning the early evening sky Saturday, September 7, 2013
Getting Closer Climbing high to see a comet Friday, September 6, 2013
Local Arm Wrapping our arms around our home galaxy Wednesday, September 4, 2013
A New Start An observatory gets a new start Tuesday, September 3, 2013
Changing Directions A change of direction for McDonald Observatory Monday, September 2, 2013
Moon and Mars Drilling holes in the surface of Mars Sunday, September 1, 2013
Moon and Aldebaran Looking 67 years back in time Tuesday, August 27, 2013
M18 A faint cluster with a bright pedigree Sunday, August 25, 2013
Equuleus Two stars whose fates are intertwined Saturday, August 24, 2013
Spitzer Space Telescope Taking a good look at an exoplanet Friday, August 23, 2013
Infrared Astronomy Casting eyes on the cold sky Thursday, August 22, 2013
Pulsar Tales Dead stars that won’t shut up Tuesday, August 20, 2013
Desert Astronomy Astronomy in a desert wasteland Monday, August 19, 2013
Gamma Cassiopeia Pointing out a celestial letter Sunday, August 18, 2013
Dog Days The “dog days” of summer Saturday, August 17, 2013
HAT P-7 Cooling off a distant star Friday, August 16, 2013
Toasted Planets Toasting planets from the inside out Thursday, August 15, 2013
Moon and Antares Dusting off some moonrocks Wednesday, August 14, 2013
Rare Elements Creating elements between the stars Tuesday, August 13, 2013
Moon and Saturn Diving into a possible water world Monday, August 12, 2013
More Moon and Venus Stirring up some lunar dust Saturday, August 10, 2013
M4 An ancient city of stars Sunday, August 4, 2013
Sheliak A stellar tug-of-war Thursday, August 1, 2013
Tardigrades Water bears in space Wednesday, July 31, 2013
Orbital Menagerie An entire zoo of space travelers Tuesday, July 30, 2013
Spinning in Orbit Spinning around the Earth Monday, July 29, 2013
Alkaid Anchoring the Big Dipper Sunday, July 28, 2013
Megrez Holding together the Big Dipper Saturday, July 27, 2013
Counting Stars Counting the stars in the Milky Way Friday, July 26, 2013
Black Hole Beacon A black hole announces its presence Thursday, July 25, 2013
Galactic Bubbles Keeping food from a black hole Wednesday, July 24, 2013
Good Neighborhood A good neighborhood for young stars? Tuesday, July 23, 2013
Sagittarius A teapot in the southern sky Monday, July 22, 2013
Jupiter and Mars Jogging into the morning sky Sunday, July 21, 2013
Moon and Antares Clouding up nearby space Thursday, July 18, 2013
Moon and Regulus The lion’s quadruple heart Thursday, July 11, 2013
Megastars “Megastars” in a nearby galaxy Tuesday, July 9, 2013
Barnard 68 Lighting up a dark cloud Sunday, July 7, 2013
Albireo A colorful stellar duo Saturday, July 6, 2013
Distant Sun Moving away from the Sun Friday, July 5, 2013
Moon and Aldebaran The beginning of the end Thursday, July 4, 2013
Giant Blast Blasting apart a giant star Wednesday, July 3, 2013
‘Medium’ Nova A mid-size stellar explosion Tuesday, July 2, 2013
Odd Ophiuchus An odd shape with a grand distinction Saturday, June 29, 2013
On Station II Brilliant targets for the space station Tuesday, June 25, 2013
On Station New “eyes” for the space station Monday, June 24, 2013
Colorful Arcturus Adding some color to a bright star Sunday, June 23, 2013
Moon and Antares An inspiring stellar giant Friday, June 21, 2013
Summer Lining up the summer solstice Thursday, June 20, 2013
Moon and Saturn Changing seasons on two worlds Wednesday, June 19, 2013
Venus and Mercury Artists land on another world Monday, June 17, 2013
Breaking Ground A “seagull” takes flight Sunday, June 16, 2013
Galactic Thief A case of galactic thievery Saturday, June 15, 2013
Dusty Vega Stirring up dust around a bright star Friday, June 14, 2013
Older Vega A well-known star gets older Thursday, June 13, 2013
Summer Triangle Creating pictures in the stars Wednesday, June 12, 2013
Solar Twins II Hunting for worlds like Earth Sunday, June 2, 2013
Solar Twins A star that looks familiar Saturday, June 1, 2013
M101 A beautiful galactic neighbor Friday, May 31, 2013
Twinkling Jewels Up-and-down stars in the northern crown Thursday, May 30, 2013
Northern Crown Crowning the night sky Wednesday, May 29, 2013
Bright Contrasts Different worlds with a similar look Monday, May 27, 2013
The Hunting Dogs Chasing the great bear Thursday, May 23, 2013
Moon and Saturn A leisurely trek through the stars Wednesday, May 22, 2013
Close Companions A black hole devours a companion Monday, May 20, 2013
M13 Some bright stellar mysteries Sunday, May 19, 2013
Hercules The strongman strides across the night sky Saturday, May 18, 2013
Faith 7 The end of a space-age singles act Thursday, May 16, 2013
Skylab High-flying eyes on the Sun Tuesday, May 14, 2013
Setting a Date Zeroing in on the Big Bang Monday, May 13, 2013
Getting Away Escaping from a black hole in a hurry Friday, May 10, 2013
Keeping Tabs Keeping an eye on a fuzzy foot Wednesday, May 8, 2013
Recalibrating Recalibrating a space telescope Tuesday, May 7, 2013
File Cabinet Leafing through a starry filing cabinet Monday, May 6, 2013
Big and Little “Extreme” constellations Sunday, May 5, 2013
Model Cosmos Taking the measure of the solar system Friday, May 3, 2013
Star Factory A massive factory for making stars Thursday, May 2, 2013
GALEX Keeping an eye on the galactic action Sunday, April 28, 2013
Moon and Antares Naming a “rival” of Mars Saturday, April 27, 2013
Saturn at Opposition Stirring up some giant storms Friday, April 26, 2013
Moon and Saturn A futuristic buggy race Thursday, April 25, 2013
Bright Visitors Bright visitors from beyond Earth Monday, April 22, 2013
Alpha Centauri Planet A nearby planetary neighbor Sunday, April 21, 2013
Coma Galaxy Cluster A brilliant cluster of galaxies Friday, April 19, 2013
Coma Star Cluster Golden tresses and glistening stars Thursday, April 18, 2013
Messy Impact Debating a devastating impact Wednesday, April 17, 2013
The Antennae Seeing the future of the Milky Way Tuesday, April 16, 2013
The Naughty Crow A naughty crow angers the gods Monday, April 15, 2013
Moon in Taurus Drawing some stellar pictures Saturday, April 13, 2013
Messy Giant Kicking up dust around a giant star Friday, April 12, 2013
Magnetic Directions Navigating with an internal compass Tuesday, April 9, 2013
Magnetic Earth Earth’s changing magnetic field Monday, April 8, 2013
Tau Boötis Keeping an eye on a star with a planet Sunday, April 7, 2013
Boötes A constellation with a confused history Saturday, April 6, 2013
Gamma-2 Velorum A star exposes its inner workings Friday, April 5, 2013
Zeta Puppis A rare stellar hothead Wednesday, April 3, 2013
Puppis A naming slight for a leading light Tuesday, April 2, 2013
Groombridge 1830 An interloper from a distant realm Sunday, March 31, 2013
Moon and Antares Evidence of ancient chemical factories Saturday, March 30, 2013
Moon and Saturn Sharing tracks around a giant planet Friday, March 29, 2013
Zapped! Part II An outburst from a pair of dead stars Wednesday, March 27, 2013
Zapped! Earth gets zapped by cosmic radiation Tuesday, March 26, 2013
Pyramid Stars Guiding lights of the ancient world Monday, March 25, 2013
More Moon and Regulus Protecting some lunar monuments Sunday, March 24, 2013
Moon and Regulus Putting the squeeze on a star Saturday, March 23, 2013
Cracking Up A neutron star cracks up Friday, March 22, 2013
Neutron Stars Gravity wins the stellar battle Thursday, March 21, 2013
Guitar Nebula Strumming a few astronomical notes Saturday, March 16, 2013
ALMA Cranking up a giant new telescope Wednesday, March 13, 2013
Pulsar Planets Reborn from a violent demise Tuesday, March 12, 2013
Planetary Debris Rocky evidence of planetary systems Monday, March 11, 2013
In the Zone Comfortable worlds around feeble stars Sunday, March 10, 2013
Lots of Planets Strength of discovery in numbers Saturday, March 9, 2013
Four Suns A world with four suns in the sky Friday, March 8, 2013
Planet Hunters Hunting for leftover planets Thursday, March 7, 2013
Ringing Beat The beat of vibrating stars Wednesday, March 6, 2013
Side Jobs A space telescope gets some extra jobs Tuesday, March 5, 2013
Comet PanStarrs A comet gets ready to shine Monday, March 4, 2013
Moon and Antares Two stars with different fates Sunday, March 3, 2013
Adhara Another impressive “dog” star Saturday, March 2, 2013
Moon and Spica Illumination from a disappearing act Thursday, February 28, 2013
Small Black Holes II Black holes that fizzle in a hurry Tuesday, February 26, 2013
Small Black Holes Looking for tiny black holes Monday, February 25, 2013
Moon and Regulus A different kind of star system Sunday, February 24, 2013
Yardsticks Measuring astronomical distances Saturday, February 23, 2013
Procyon A pair of stellar light bulbs Friday, February 22, 2013
The Beehive Brightening up a meager constellation Friday, February 15, 2013
Space Watch II Searching for cosmic bullets Tuesday, February 12, 2013
Double Cluster Sparkling stellar jewels Sunday, February 10, 2013
Milky Way Matters The Milky Way bulks up Saturday, February 9, 2013
Quasars IV An astronomical navigation system Friday, February 8, 2013
Quasars III The glory days for a black hole Thursday, February 7, 2013
Quasars II Lighting up a distant galaxy Wednesday, February 6, 2013
Quasars The long-range secret of odd “stars” Tuesday, February 5, 2013
Moon and Antares A hot-but-cool stellar supergiant Monday, February 4, 2013
Crimson Star An aging but colorful star Sunday, February 3, 2013
Nowhere to Hide Hiding in plain sight Thursday, January 31, 2013
Bright Black Hole Brightness from the ultimate darkness Wednesday, January 30, 2013
M31’s Central Cluster Bright stars around a galaxy’s dark heart Tuesday, January 29, 2013
Missed Opportunity Missing a “stellar” opportunity Monday, January 28, 2013
Moon and Regulus Hercules embarks on a quest Sunday, January 27, 2013
IRAS Opening fresh eyes on the universe Friday, January 25, 2013
Hot Planet The glow of a small but hot planet Thursday, January 24, 2013
Superflares Super explosions on other stars Wednesday, January 23, 2013
Flashy Neighbor Evidence of a flashy neighbor Tuesday, January 22, 2013
Moon and Jupiter Tiny planets around a tiny star Sunday, March 25, 2012
Moon and Jupiter Worlds that have taken a beating Monday, January 21, 2013
Canopus The silver medalist of bright stars Sunday, January 20, 2013
M35 A crowded stellar neighborhood Friday, January 18, 2013
Epsilon Geminorum A star by the numbers Thursday, January 17, 2013
Pollux Younger but “older” than the Sun Wednesday, January 16, 2013
Castor Three sets of stellar twins Tuesday, January 15, 2013
Gemini An uncommon story in the night sky Monday, January 14, 2013
More Moon and Mars Taking a ride on a Martian moon Sunday, January 13, 2013
Bigger Diamonds Real astronomical “sparklers” Friday, January 11, 2013
Diamonds Making “ice” from fire Thursday, January 10, 2013
Moon and Antares Building a stellar onion Saturday, July 28, 2012
M2 A distant home for old stars Sunday, January 6, 2013
Bright Interlopers Disorderly visitors head inward Thursday, January 3, 2013
Comets Icy remnants from the birth of the planets Wednesday, January 2, 2013
More Sirius A stellar weight-loss program Sunday, December 30, 2012
Sirius A beautiful dog gets closer Saturday, December 29, 2012
Moon and Jupiter III Mixing up some lunar water Wednesday, December 26, 2012
Northern Cross A star pattern with a double identity Sunday, December 23, 2012
Winter Solstice A changing calendar cycle Friday, December 21, 2012
Storm Probes Plunging into the danger zone Thursday, December 20, 2012
More Mariner 2 Destroying a “second Earth” Friday, December 14, 2012
Mariner 2 Pioneering a path to another world Thursday, December 13, 2012
Lunar Returns The continued exploration of the Moon Tuesday, December 11, 2012
Apollo 17 A busy three days on the Moon Monday, December 10, 2012
More Moon and Companions A grand era of exploration Sunday, December 9, 2012
Moon and Companions Nothing to fear in the morning sky Saturday, December 8, 2012
More Capella Seeing a star in a different light Friday, December 7, 2012
Capella Bright stars with a bright future Thursday, December 6, 2012
First Steps Angling in on the stars Wednesday, December 5, 2012
RR Lyrae The rhythmic beat of a star Tuesday, December 4, 2012
Star Populations Segregating the stars of the Milky Way Monday, December 3, 2012
Jupiter at Opposition A jovial denizen of the night sky Saturday, December 1, 2012
Nukes in Space II Futuristic rockets from the past Friday, November 30, 2012
Nukes in Space Powering a mission to Mars Thursday, November 29, 2012
Orion Rising A treat returns to the evening sky Monday, November 26, 2012
Deuterium Drinking up the Big Bang Saturday, November 24, 2012
Ice Volcanoes Icy eruptions on an icy moon Friday, November 23, 2012
Cold Oasis Filling up a desert oasis Thursday, November 22, 2012
‘Young’ Moon A moon that doesn’t look its age Wednesday, November 21, 2012
‘Titanic’ Discoveries II Getting to know a distant moon Tuesday, November 20, 2012
‘Titanic’ Discoveries A big moon keeps its secrets Monday, November 19, 2012
Menkar A constellation with a case of the big head Sunday, November 18, 2012
Sweet Discovery A “sweet” discovery at a distant star Wednesday, November 14, 2012
Molecule Factory Whipping up some complex molecules Tuesday, November 13, 2012
Moon and Saturn Stirring up a giant hurricane Sunday, November 11, 2012
VERITAS Sparks from extreme cosmic environments Friday, November 9, 2012
Namibian Astronomy II Strange eyes on the gamma-ray sky Thursday, November 8, 2012
Namibian Astronomy Watching the skies from western Africa Wednesday, November 7, 2012
Dark Parks Unfettered views of the night sky Tuesday, November 6, 2012
Blue Night The night sky gets a little bluer Monday, November 5, 2012
R Trianguli Turmoil at the end of a star’s life Sunday, November 4, 2012
Triangulum Aging stars in the triangle Saturday, November 3, 2012
Multiple Blasts Multiple explosions from a single star Friday, November 2, 2012
Halloween Star II A stellar cannibal for Halloween Wednesday, October 31, 2012
Halloween Star A two-headed stellar demon Tuesday, October 30, 2012
Mirfak The hero’s brightest star Monday, October 29, 2012
Aries II Taking the measure of a nearby star Sunday, October 28, 2012
Aries Moving the point of the vernal equinox Saturday, October 27, 2012
Tiny Black Hole A record-setting black hole Friday, October 26, 2012
Star Destroyer A star loses a life-and-death struggle Thursday, October 25, 2012
Alpha and Beta Aquarii Rare supergiant stars Tuesday, October 23, 2012
Lucky Stars Lucky stars in the evening sky Monday, October 22, 2012
Shrinking Iceball A distant iceball gets smaller Friday, October 19, 2012
Moon and Companions Colorful companions for the Moon Thursday, October 18, 2012
White-Dwarf Planets II Dead stars consume dead planets Wednesday, October 17, 2012
White-Dwarf Planets Close planets around dead stars Tuesday, October 16, 2012
Deneb Algedi Deciphering the tale of an aging star Sunday, October 14, 2012
Bringing Up the Rear The tale of some starry tails Saturday, October 13, 2012
Capricornus The edge of the celestial sea Friday, October 12, 2012
Moon and Venus Long pauses in long-distance calls Thursday, October 11, 2012
Dark Portrait Snapping a picture of the unseeable Tuesday, October 9, 2012
IC 10 A faint but busy galactic neighbor Monday, October 8, 2012
Faint Triplets A faint set of stellar triplets Sunday, October 7, 2012
Aquarius Life-giving waters from a faint constellation Saturday, October 6, 2012
European Southern Observatory Organizing a new observatory Friday, October 5, 2012
More Venus and Regulus A well-timed early morning encounter Tuesday, October 2, 2012
Venus and Regulus Venus chugs past the heart of the lion Monday, October 1, 2012
Jovial Water Worlds Giant oceans around a giant planet Thursday, September 27, 2012
Water Worlds: Triton Squeezing out a global ocean Wednesday, September 26, 2012
Water Worlds: Titan A world with a really deep ocean Tuesday, September 25, 2012
Water Worlds Filling oceans on distant worlds Monday, September 24, 2012
The Horse’s Nose The flying horse’s bright nose Sunday, September 23, 2012
More Moon and Antares A stellar recycling project Friday, September 21, 2012
Moon and Antares Flirting with the stars Thursday, September 20, 2012
Moon and Mars Prime real estate on other worlds Wednesday, September 19, 2012
More Fomalhaut Cometary chaos around a young star Tuesday, September 18, 2012
Fomalhaut The lonely “Autumn Star” Monday, September 17, 2012
Hot Jupiters Clearing out a star system Saturday, September 15, 2012
BL Lacertae A star that’s more than a star Friday, September 14, 2012
Andromeda Starburst Brightening up a giant galaxy Thursday, September 13, 2012
Collision Course Taking aim at another galaxy Wednesday, September 12, 2012
Andromeda Galaxy A galactic twin in the evening sky Tuesday, September 11, 2012
Andromeda A grand story in the night sky Monday, September 10, 2012
Moon and Ceres Peeking beneath the skin of an asteroid Saturday, September 8, 2012
Moon and Companions II Dipping our toes in a giant ocean Friday, September 7, 2012
Gamma Cephei IV Getting messy for science Wednesday, September 5, 2012
Gamma Cephei III Keeping a planet on the table Tuesday, September 4, 2012
Gamma Cephei II A gnat’s eyelash and a distant planet Monday, September 3, 2012
Gamma Cephei The top of the king’s starry house Sunday, September 2, 2012
Dune Worlds Giant sand dunes on alien worlds Friday, August 31, 2012
Arcturus Tracing a star’s origins Tuesday, August 28, 2012
Bear Watcher Keeping an eye on the big bear Monday, August 27, 2012
OSIRIS-Rex Studying a threatening space rock Sunday, August 26, 2012
Homeworld Security Tracking down threats from space Saturday, August 25, 2012
Dawn III Speeding toward a new target Friday, August 24, 2012
Voyagers Beginning a voyage to the stars Monday, August 20, 2012
Cloudy Skies A cruel twist of nature Saturday, August 18, 2012
Contact Binaries III A star system with a lot of variety Friday, August 17, 2012
Contact Binaries II Stirring up the family dynamics Thursday, August 16, 2012
Contact Binaries Stars that can’t let go Wednesday, August 15, 2012
Moon, Venus, Mercury Getting close to the Sun Monday, August 13, 2012
Moon, Jupiter, and Aldebaran The Moon takes a pounding Friday, August 10, 2012
M11 A flock of young stars Thursday, August 9, 2012
Moon Rising Inspiration from the rising Moon Tuesday, August 7, 2012
Dog Days Sweating through the Dog Days of summer Monday, August 6, 2012
Sky Crane A complicated landing for a complicated rover Sunday, August 5, 2012
Martian Nuke Powering up a Mars rover Saturday, August 4, 2012
Spinning Hearts The spinning hearts of giant stars Thursday, August 2, 2012
Cygnus X-1 A giant star vanishes from view Wednesday, August 1, 2012
Colorful Beak The swan’s colorful beak Tuesday, July 31, 2012
Cygnus A “snowbird” that heads west instead of south Monday, July 30, 2012
Equuleus Drawing up a little horse Sunday, July 29, 2012
Moon and Scorpius Scoping out a solar twin Friday, July 27, 2012
Steamy Sights Steamy sights in the southern sky Thursday, July 26, 2012
Future Beacons Lining up the North Stars Monday, July 23, 2012
Galactic Nests Keeping the chicks close to the nest Sunday, July 22, 2012
The Scorpion’s Tail The scorpion’s dynamic stinger Saturday, July 21, 2012
Alexandria A city — and a star — fit for a king Friday, July 20, 2012
Comet Swift-Tuttle A famous comet changes its image Wednesday, July 18, 2012
Tuttle Comets War, embezzlement, and comets Tuesday, July 17, 2012
Swift Comets From hardware-store owner to cosmic celebrity Monday, July 16, 2012
Altairian Planets A star that gets a lot of attention Thursday, July 12, 2012
Altair A close and fast-moving neighbor Wednesday, July 11, 2012
Vega A star that spins in a hurry Monday, July 9, 2012
Summer Triangle The brilliant Summer Triangle Sunday, July 8, 2012
H-R Diagram Drawing the lives of the stars Saturday, July 7, 2012
Venus and Aldebaran Bright and brighter in the dawn sky Friday, July 6, 2012
Faint But Steady Stars that are faint but long-lived Thursday, July 5, 2012
The Sombrero II Two galaxies for the price of one Tuesday, July 3, 2012
The Sombrero Looking beneath the brim of a galaxy Monday, July 2, 2012
Moon and Antares Taking the measure of a jumbo star Saturday, June 30, 2012
Zippy Planets Getting a big kick from a black hole Thursday, June 28, 2012
More Moon and Companions Turning on some far-away lamps Wednesday, June 27, 2012
Companions Companionship in the evening sky Tuesday, June 26, 2012
Delphinus The beautiful, graceful dolphin Sunday, June 24, 2012
Leo Minor Stars without much flash Saturday, June 23, 2012
Sun Tower A moment of sunlight without shadows Tuesday, June 19, 2012
Pipe Nebula Lighting up a dark nebula Sunday, June 17, 2012
Comet Exchange Stars exchange frozen leftovers Friday, June 15, 2012
Future Neighbor A future close neighbor to the Sun Thursday, June 14, 2012
Sun Power Weathering bouts of space weather Wednesday, June 13, 2012
‘Milky’ Way The “milky” band of the Milky Way Sunday, June 10, 2012
Family Breakup A stellar family breaks up Friday, June 8, 2012
EUVE Opening a new “window” on the universe Thursday, June 7, 2012
Double Heart Twin black holes in a nearby galaxy Wednesday, May 30, 2012
Hungry Black Hole A black hole that’s snacking on a star Tuesday, May 29, 2012
Bear’s Nose The great bear’s shiny nose Sunday, May 27, 2012
The Keystone Four stars, four stories Friday, May 25, 2012
Hercules Cloud Piling up stars in the outer galaxy Thursday, May 24, 2012
Hercules Cluster A crowded “city” of stars Wednesday, May 23, 2012
Hercules Following the strongman across the sky Tuesday, May 22, 2012
Making Mirrors Making the hearts of giant telescopes Tuesday, May 15, 2012
Giant Magellan Telescope A new “giant” eye on the universe Monday, May 14, 2012
Primordial Clouds Relics of the birth of the universe Sunday, May 13, 2012
Gravity Probe B Putting a spin on space itself Thursday, May 10, 2012
Luna See Firing a laser at the Moon Wednesday, May 9, 2012
Moving Clouds Clouds that move with the seasons Sunday, May 6, 2012
Humid Skies Measuring the humidity on a cold world Saturday, May 5, 2012
More Moon and Companions A warm blanket on a frigid moon Friday, May 4, 2012
Moon and Companions Floating through an alien sky Thursday, May 3, 2012
Titan Cold rains and dark lakes on a chilly world Wednesday, May 2, 2012
Moon and Mars Crowded skies above the Moon Tuesday, May 1, 2012
Moon, Mars, and Regulus Uncovering the secrets of a star Monday, April 30, 2012
Capella A quick exit for a “heavy” star Friday, April 27, 2012
Ranger 4 Slamming into the far side of the Moon Thursday, April 26, 2012
Moon and Taurus Snapping the universe -- from the Moon Monday, April 23, 2012
Apollo 16 Fun and science on the lunar surface Saturday, April 21, 2012
Black Hole Power Getting power from a black hole Friday, April 20, 2012
Looking for ET Looking for signs of alien visitors Thursday, April 19, 2012
Warp Drive Engaging the warp drive Wednesday, April 18, 2012
New Ideas New ideas for exploring the universe Tuesday, April 17, 2012
Saturn at Opposition Looking back toward home Saturday, April 14, 2012
White Dwarf Quakes Stars that “quake” in the night Wednesday, April 11, 2012
Venus and Aldebaran The demise of a star and planet Sunday, April 8, 2012
Balloon Ride Taking a balloon ride for science Saturday, April 7, 2012
Moon, Saturn, and Spica Bracketing the horn of the dragon Friday, April 6, 2012
Double Sunsets Double sunsets on alien worlds Thursday, April 5, 2012
Snow Line A solar system’s best spot for skiing Wednesday, April 4, 2012
Making Venuses A “stretchy” way to heat a planet Tuesday, April 3, 2012
Snack Time Snack time for a giant black hole Thursday, March 29, 2012
Black Hole Bullets Bullets of hot gas from a black hole Wednesday, March 28, 2012
Multi-Messenger Astronomy Notes from different messengers Tuesday, March 27, 2012
Saturnian Encounters A busy week of moon-hopping Monday, March 26, 2012
Galactic Streams Blending into the Milky Way Thursday, March 22, 2012
Sagittarius Dwarf A galactic tug-of-war Wednesday, March 21, 2012
Satellite Galaxies Satellite galaxies for the Milky Way Tuesday, March 20, 2012
Spring Equinox A new season and a new beginning Monday, March 19, 2012
The Right Angle Taking a bead on the lion’s tail Sunday, March 18, 2012
Racing Ahead Racing the Red Planet around the Sun Friday, March 16, 2012
Rover Rovings The promise and perils of sunlight Thursday, March 15, 2012
NuSTAR Dead stars tell some important tales Wednesday, March 14, 2012
Cat’s Eye Nebula A star that’s changing form Tuesday, March 13, 2012
More Venus and Jupiter Worlds with and without companions Monday, March 12, 2012
Venus and Jupiter Following a pair of cosmic headlights Sunday, March 11, 2012
More Moon, Saturn, and Spica A celestial yin and yang Saturday, March 10, 2012
Comfy Planets Looking for comfy homes for life Sunday, March 4, 2012
Mars at Opposition Drawing a map of the solar system Saturday, March 3, 2012
Mars Mayhem Mars marches across March skies Thursday, March 1, 2012
Leo Rising Adding some color to the stars Monday, February 27, 2012
Moon and Planets III Artistry on a planetary scale Sunday, February 26, 2012
Moon and Venus Encapsulating a bit of the Moon Saturday, February 25, 2012
Winter Milky Way Following a galactic pathway Wednesday, February 15, 2012
Looking Deep Looking for storms before they’re born Monday, February 13, 2012
Moon and Mars Historic monuments on another world Thursday, February 9, 2012
Venus and Uranus A chance to see a distant giant Wednesday, February 8, 2012
Planetary Flashes Lighting up the clouds of Venus Tuesday, February 7, 2012
A Fresh Shower A fresh winter meteor shower Saturday, February 4, 2012
Sirius B A close companion for a bright star Tuesday, January 31, 2012
Sirius A close, bright stellar neighbor Monday, January 30, 2012
IC 342 A close but veiled cosmic pinwheel Sunday, January 22, 2012
Space Rocks III In search of space rocks Friday, January 20, 2012
Space Rocks Rocks from beyond Earth Wednesday, January 18, 2012
Harvey Nininger II Buying space rocks for a dollar a pound Tuesday, January 17, 2012
Harvey Nininger A burning passion for space rocks Monday, January 16, 2012
Moon and Companions Reflections on a quarter Moon Sunday, January 15, 2012
AP Columbae A nearby stellar youngster Saturday, January 14, 2012
Wet Universe Sprinkling water throughout the cosmos Tuesday, January 10, 2012
Watery Earth Raining on the young planet Earth Monday, January 9, 2012
Pulsar Planets Planets around a dead star Sunday, January 8, 2012
Crab Nebula The “crabby” remains of an exploded star Friday, January 6, 2012
Earth at Perihelion Snuggling close to the Sun Wednesday, January 4, 2012
Quadrantid Meteors The children of a celestial break-up Tuesday, January 3, 2012
Moon and Jupiter The master of a busy domain Monday, January 2, 2012
Lunar Arrival An unusual way to greet the new year Friday, December 30, 2011
Planetary Bombardment Possible planets take a pounding Thursday, December 29, 2011
Sparkly Rings Bright rings for a distant planet Wednesday, December 28, 2011
More Moon and Venus Changing the face of the Moon Tuesday, December 27, 2011
Moon and Venus Paving the surface of a bright planet Monday, December 26, 2011
Jean-Louis Pons The champion of all comet hunters Friday, December 23, 2011
Grote Reber A new way to study the universe Thursday, December 22, 2011
December Solstice A pale light in the daytime sky Wednesday, December 21, 2011
Horsehead Nebula Drifting along with an interstellar cloud Tuesday, December 20, 2011
More Moon and Companions An exciting future for a pair of stars Monday, December 19, 2011
Moon and Companions Lining up some bright companions Sunday, December 18, 2011
Moon and Mars Molding the image of the Red Planet Friday, December 16, 2011
Rock Hunting Scouring the ice for space rocks Tuesday, December 13, 2011
Geminid Meteors Bad timing for a good meteor shower Monday, December 12, 2011
Lunar Eclipse Lining up a lunar eclipse Friday, December 9, 2011
Moon and Pleiades A big, bright stellar family Thursday, December 8, 2011
Far-Out Earths Warming up some far-out Earths Wednesday, December 7, 2011
Moon and Jupiter Painting a two-toned moon Monday, December 5, 2011
Betelgeuse II Looking for the “edge” of a giant star Friday, December 2, 2011
Betelgeuse A superstar among supergiants Thursday, December 1, 2011
Beta Pegasi Taking a look into the future Wednesday, November 30, 2011
Rarae Aves II Dancing with the firebird Tuesday, November 29, 2011
More Moon and Venus Ancient oceans on a dry world Sunday, November 27, 2011
Moon and Venus A skin-deep planetary beauty Saturday, November 26, 2011
Solar Eclipse Darkening sun-lit southern skies Friday, November 25, 2011
Mars Science Laboratory III Protecting Mars from alien invaders Thursday, November 24, 2011
Mars Science Laboratory I Plumbing for water on Mars Tuesday, November 22, 2011
Moon, Saturn, and Spica A planet sings out of tune Monday, November 21, 2011
Mikhail Lomonosov The man who discovered an atmosphere Saturday, November 19, 2011
Leonid Meteors A faint but steady meteor shower Wednesday, November 16, 2011
Moon and Aldebaran New tools for digging into lunar history Saturday, November 12, 2011
Mars and Regulus Two old friends in the morning sky Thursday, November 10, 2011
Another Encounter Keeping tabs on a rocky visitor Monday, November 7, 2011
Cassini at Enceladus Streaking past a solar-system treasure Saturday, November 5, 2011
Phobos-Grunt DNA testing for a Martian moon Friday, November 4, 2011
Back in the Game? Staging a return to deep space Thursday, November 3, 2011
Great Comet of 1811, II War, peace, and fine wines Wednesday, November 2, 2011
Great Comet of 1811 A great show by a “dirty snowball” Tuesday, November 1, 2011
Halloween Ghouls Ghoulish delights in the sky Monday, October 31, 2011
Saturn and Spica Eyeballing some changes in the sky Sunday, October 30, 2011
Galileo at Gaspra A first encounter with a space rock Saturday, October 29, 2011
Hottest Planet A world that’s hotter than Texas Wednesday, October 26, 2011
Andromeda Galaxy Looking deep into the universe Tuesday, October 25, 2011
Andromeda A famous but faint princess Monday, October 24, 2011
Fishy Constellations Fishing for constellations Sunday, October 23, 2011
M15 Debating a medium-sized black hole Saturday, October 22, 2011
Moon and Companions A big astronomical dwarf Friday, October 21, 2011
Orionid Meteor Shower Calling cards of a distant comet Wednesday, October 19, 2011
NEEMO Diving toward an asteroid Monday, October 17, 2011
Another Close Call A close visit by an asteroid Sunday, October 16, 2011
Cartwheel Galaxy Creating a brilliant ring of stars Saturday, October 15, 2011
Comet Elenin A close encounter with comet dust Friday, October 14, 2011
Moon and Jupiter Heating up a big moon Wednesday, October 12, 2011
X Factor The Sun’s “X” factor Monday, October 10, 2011
Alpha Persei Cluster Tracing a galactic cataclysm Sunday, October 9, 2011
Alpha Persei A young but aging star Saturday, October 8, 2011
Draconid Meteors The sparks of a fire-breathing dragon Friday, October 7, 2011
More Cassiopeia A Flowing through a neutron star Thursday, October 6, 2011
Cassiopeia A Muffling the death throes of a star Wednesday, October 5, 2011
Rho Cassiopeia Practicing for a big blast Tuesday, October 4, 2011
Cassiopeia Vanity and retribution in the night sky Monday, October 3, 2011
Robert Trumpler Filling the space between the stars Sunday, October 2, 2011
Planning Ahead Planning for a trip to the stars Saturday, October 1, 2011
Milky Way’s Heart V Youngsters at the heart of the Milky Way Friday, September 30, 2011
Milky Way’s Heart II A sky-spanning marquee of stars Tuesday, September 27, 2011
Milky Way’s Heart Taking a peek at a busy downtown Monday, September 26, 2011
Calendars Following the cycles of the sky Friday, September 23, 2011
Thomas Wright Giving birth to a galaxy Wednesday, September 21, 2011
ARTEMIS Teaching old spacecraft new tricks Monday, September 19, 2011
M2 An ancient family of stars Saturday, September 17, 2011
Early Start Getting an astronomical head start Monday, September 12, 2011
Lake Tides Small waves on big ponds Saturday, September 10, 2011
Border Star A star with a double identity Friday, September 9, 2011
GRAIL Playing follow-the-leader Wednesday, September 7, 2011
Lumpy Moon Measuring the Moon’s “lumpiness” Tuesday, September 6, 2011
Sagitta Arrowing into the autumn season Sunday, September 4, 2011
Moon and Antares Kicking the Moon in the name of science Saturday, September 3, 2011
Evening Lineup II A pair of “pointy” stars Thursday, September 1, 2011
M7 A bright but distant star cluster Sunday, August 28, 2011
Kepler III Two ways to find planets Saturday, August 27, 2011
Kepler II Winnowing a list of possible planets Friday, August 26, 2011
Kepler I Watching for some stars to blink Thursday, August 25, 2011
Moon and Mars Roving across the Red Planet Wednesday, August 24, 2011
Triton A frigid moon like no other Tuesday, August 23, 2011
Changing Addresses Peering into a hidden planet Sunday, August 21, 2011
More Moon and Jupiter Jumpin' Jupiter! Saturday, August 20, 2011
Moon and Jupiter Young, vigorous star systems Friday, August 19, 2011
Yerkes Telescope A new career for a pioneering telescope Thursday, August 18, 2011
Astronomical Artworks Preserving scientific works of art Wednesday, August 17, 2011
Star Organizer Getting the stars organized Monday, August 15, 2011
61 Cygni Possible homes for neighbors Saturday, August 13, 2011
Cygnus-X A bright, busy stellar neighborhood Thursday, August 11, 2011
More Deneb Too many targets, not enough time Wednesday, August 10, 2011
Deneb Nagging questions about a giant star Tuesday, August 9, 2011
Cygnus The impressive heart of the swan Monday, August 8, 2011
Weather Forecasts Expanding the daily weather forecast Saturday, August 6, 2011
Space Weather Nasty weather from beyond Earth Friday, August 5, 2011
Moon and Companions Living under brilliant suns Thursday, August 4, 2011
Moon and Saturn "Listening" for distant worlds Wednesday, August 3, 2011
Rock Hounds Cleaning up some desert rocks Thursday, July 28, 2011
Dawn at Vesta Studying the dawn of the solar system Wednesday, July 13, 2011
Mars and Aldebaran Coloring the night sky Tuesday, July 12, 2011
Moon and Saturn A two-toned walnut of a moon Thursday, July 7, 2011
Gassy Mars The "gassy" Martian atmosphere Wednesday, June 29, 2011
More Moon and Mars Mars falls on an Egyptian village Tuesday, June 28, 2011
Making Moondust II Keeping out the moondust Thursday, June 23, 2011
Making Moondust A bit of the Moon right here on Earth Wednesday, June 22, 2011
Summer Solstice Hot times in northern climes Tuesday, June 21, 2011
Moon and Antares The sweetness of a full Moon Tuesday, June 14, 2011
Earliest Sunrise Getting ready for some early sunshine Sunday, June 12, 2011
Telescope Facelift II Keeping a giant telescope on track Friday, June 3, 2011
Telescope Facelift A facelift in the name of science Thursday, June 2, 2011
Close Encounter A neighbor pays Earth a close visit Wednesday, June 1, 2011
Partial Solar Eclipse A feeble northern Sun Tuesday, May 31, 2011
The Art of Science Impressions of a space program Monday, May 30, 2011
Moon and Jupiter Shielding an entire planet Saturday, May 28, 2011
Proxima Centauri Planets? Filling in the details on our closest neighbor Friday, May 27, 2011
Planet Search Searching for faint wobbling planets Wednesday, May 25, 2011
Moon or Bust! Setting a lofty national goal Sunday, May 22, 2011
Star Markers Heading north to the stars Friday, May 20, 2011
Irene Discovering a "peaceful" planetoid Thursday, May 19, 2011
Soggy Moon Changing weather on an icy moon Wednesday, May 18, 2011
Moon and Antares Different stars, different lives Tuesday, May 17, 2011
Moon and Spica Paying a call on an old friend Saturday, May 14, 2011
Moon and Saturn Heating up a Saturnian moon Friday, May 13, 2011
Moon and Regulus A volcanic lunar layer cake Tuesday, May 10, 2011
Venus and Jupiter Twin headlights in the dawn sky Monday, May 9, 2011
Morning Mayhem A worry-free planetary conjunction Sunday, May 8, 2011
Lunar Corral Fencing in the crescent Moon Saturday, May 7, 2011
Freedom 7 A brief hop into the history books Thursday, May 5, 2011
Mercury in the Morning A planet with a message Wednesday, May 4, 2011
Lutetia Ready to map an asteroid Tuesday, May 3, 2011
Ready for Vesta Ready to map a giant asteroid Monday, May 2, 2011
Vanishing Orion A seasonal marker disappears Sunday, May 1, 2011
Explorer 11 A first glimpse of the universe Wednesday, April 27, 2011
M83 Livening up the galactic boondocks Tuesday, April 26, 2011
Kepler 11 A star with a big family of planets Friday, April 22, 2011
Basket O' Planets A basketful of planets Thursday, April 21, 2011
Moon and Antares An unlikely abode for life Wednesday, April 20, 2011
Last Ride Shuttling a big magnet into space Monday, April 18, 2011
Moon and Companions Follow the ice-crystal road Saturday, April 16, 2011
Birth of a Moon New ideas about the birth of a moon Friday, April 15, 2011
Moon and Regulus Catching a stellar carnival ride Wednesday, April 13, 2011
Space Day A double reason to celebrate Tuesday, April 12, 2011
Revolutionary Star Looking for a "revolutionary" star Sunday, April 10, 2011
Crater Sipping from a faint celestial cup Saturday, April 9, 2011
Flickering Crab A dead but fascinating star Friday, April 8, 2011
Moon and Aldebaran Predicting the future of a star Thursday, April 7, 2011
Compton Observatory One of the great ones Tuesday, April 5, 2011
NGC 4361 Sculpting a beautiful stellar corpse Sunday, April 3, 2011
Gienah A young-but-old star Saturday, April 2, 2011
Sunflower Galaxy A good night for galaxy-watching Thursday, March 31, 2011
Epsilon Aurigae A long-lasting stellar eclipse Monday, March 28, 2011
Taking Inventory Taking inventory of the solar system Saturday, March 26, 2011
The Big Dog A constellation with a bite Friday, March 25, 2011
Moon and Antares The Moon crosses the serpent bearer Thursday, March 24, 2011
Lightning Shows III Firing beams of antimatter Wednesday, March 23, 2011
Lightning Shows II Dangerous outbursts from big storms Tuesday, March 22, 2011
Lightning Shows Lighting up the sky above a storm Monday, March 21, 2011
Spring Equinoxes The start of spring on two worlds Sunday, March 20, 2011
Messenger at Mercury Clearing up the view of an elusive planet Tuesday, March 15, 2011
Shortest Year Birthdays by the basketful Sunday, March 13, 2011
Cancer A famous but faint constellation Saturday, March 12, 2011
M87 Black Hole Looking for a hidden giant Thursday, March 10, 2011
Young Black Hole Watching an infant black hole Wednesday, March 9, 2011
Galaxies and Black Holes Insight into a chicken-and-egg problem Tuesday, March 8, 2011
Halley's Armada An armada takes aim at Halley's Comet Saturday, March 5, 2011
Underground Astronomy Astronomy in the lowest of places Tuesday, March 1, 2011
M46 and M47 Two prominent "families" of stars Saturday, February 26, 2011
More Moon and Companions Fine-tuning the view of the heavens Monday, February 21, 2011
Mir Putting up a first building block Saturday, February 19, 2011
Moon and Regulus Pinning down a moving star Thursday, February 17, 2011
Clockwork Skies Plotting the motions of the sky Wednesday, February 16, 2011
Stellar Factory Forging elements in a stellar factory Tuesday, February 15, 2011
Comet Encounter Returning to the scene of a wreck Monday, February 14, 2011
Lunar Guidance Following a guiding star Sunday, February 13, 2011
NEAR Encounter A close encounter with an asteroid Saturday, February 12, 2011
Interesting Planets Interesting worlds in other star systems Friday, February 11, 2011
Beta Pictoris A speck of light with a difference Thursday, February 10, 2011
Upsilon Andromedae An out-of-whack solar system Wednesday, February 9, 2011
Defining Planets An uncertain count of planets Tuesday, February 8, 2011
More Apollo 14 Taking care of some lunar business Saturday, February 5, 2011
Mars in Conjunction Hiding in the bright sunshine Thursday, February 3, 2011
Messengers The messengers of the stars Wednesday, February 2, 2011
Winter Milky Way The bright and dark Milky Way Sunday, January 30, 2011
Moon, Venus, and Antares Puffing up a stellar supergiant Friday, January 28, 2011
Titan IV Sailing an alien sea Thursday, January 27, 2011
Titan III A "great" lake on a frigid moon Wednesday, January 26, 2011
Titan II Stirring up a lively brew Tuesday, January 25, 2011
Titan A remarkably familiar world Monday, January 24, 2011
Counting Planets II Keeping score in the search for planets Thursday, January 20, 2011
Counting Planets Adding to the planetary census Wednesday, January 19, 2011
Habitable Zones Looking for worlds with rainy days Tuesday, January 18, 2011
Plurality of Worlds Changing ideas about the universe Monday, January 17, 2011
Sirius The long path to a nearby star Sunday, January 16, 2011
Galactic Pileup A big galactic pileup Saturday, January 15, 2011
Alnilam Sailing on a stellar wind Friday, January 14, 2011
Orion's Belt Paying attention to a celestial trio Thursday, January 13, 2011
Spinning Horsehead A spinning horse's head Saturday, January 8, 2011
NGC 1502 A necklace for the celestial giraffe Thursday, January 6, 2011
Stellar Shock Wave A star rams its way through the galaxy Wednesday, January 5, 2011
The Camel Leopard Spotting a spotted constellation Tuesday, January 4, 2011

Featured Images

Hubble Space Telescope view of the Gliese 229 system
Faint Neighbors Sunday, February 7, 2016
Luna 9, February 1966
First Landing Wednesday, February 3, 2016
View of a doomed comet approaching the Sun
Doomed Comet Wednesday, January 20, 2016
Space-based view of a powerful solar flare
Big Blast Monday, January 18, 2016
Strong winds blowing from a black hole in a distant spiral galaxy
Windy Black Hole Friday, January 15, 2016
Infrared image of a bow shock in front of a fast star
Shocking Star Thursday, January 7, 2016
Artist's concept of Galileo Jupiter probe
Dropping In Wednesday, December 30, 2015
Cassini views the moon Enceladus passing in front of Saturn
Last Look Wednesday, December 23, 2015
Sand dunes on Mars
Dune World Sunday, December 20, 2015
The odd galaxy NGC 660
Busy Galaxy Friday, December 18, 2015
Hubble view of the Crab Nebula
Spectacular Crab Monday, December 14, 2015
Telescopes in the cargo bay of space shuttle Columbia, December 1995
Space (Shuttle) Telescope Tuesday, December 8, 2015
Launch of Lisa Pathfinder
Gravity Bound Wednesday, December 2, 2015
Planetary nebula known as the Eskimo Nebula
Cyclops? Sunday, November 29, 2015
Hubble view of galaxy Markarian 231
Double Double Sunday, November 22, 2015
Jets from a protostar in Serpens
Huffing and Puffing Friday, November 6, 2015
Plumes of ice and water shoot into space from Enceladus, a moon of Saturn
Getting Wet Tuesday, October 27, 2015
Hubble view of the Eta Carinae system
The Homunculus Wednesday, October 21, 2015
Cassini view of north polar region of Enceladus
Headin' North Thursday, October 15, 2015
Artist's concept of the star system 51 Pegasi, featuring a giant planet
The First Monday, October 12, 2015
Global view of Charon, Pluto's largest moon
Red Roof Moon Friday, October 2, 2015
Hubble view of NGC 7662, a planetary nebula
Blue Snowball Wednesday, September 30, 2015
Animation showing Enceladus passing behind Dione
Two-Fer Friday, September 18, 2015
Animated view of an erupting black hole
Big Gulp Aftermath Tuesday, September 15, 2015
Dawn view of the white spots on Ceres
Spotty Crater Thursday, September 10, 2015
Artist's concept of a young Jupiter-like planet
Young Giant Thursday, August 27, 2015
Two views of Messier 22
Stellar Sparkler Monday, August 24, 2015
August 17, 2015, view of Saturn's moon Dione in front of the giant planet
Last Visit Tuesday, August 18, 2015
Multi-wavelength view of the center of the Milky Way galaxy
Galactic Hub Thursday, August 13, 2015
The Southern Owl Nebula, the last gasp of a dying star
Perfect Bubble Wednesday, August 5, 2015
Hubble Space Telescope image of the Lagoon Nebula
Colorful Lagoon Friday, July 31, 2015
Abell 78, a planetary nebula
Last Round Tuesday, July 28, 2015
The system V664 Cassiopeia is creating a planetary nebula
Bread Crumbs Thursday, July 23, 2015
Artist's concept of Fermi bubbles
Blowing Bubbles Monday, July 20, 2015
July 8 view of Charon, Pluto from New Horizons
Dynamic Duo Friday, July 10, 2015
Artist's concept of New Horizons passing by Pluto
First Encounter Thursday, July 9, 2015
Diagram shows the location of the Kuiper Belt
Icy Realm Monday, July 6, 2015
Cassini view of a giant storm in Saturn's northern hemisphere
Stormy Skies Sunday, June 28, 2015
Two views of Saturn's moon Dione from Cassini
Near and Far Thursday, June 18, 2015
Artist's concept of a moons orbiting a Jupiter-like exoplanet
Worlds of Worlds Tuesday, June 9, 2015
Stepping Out Wednesday, June 3, 2015
Artist's concept of Alpha Centauri A and B, plus a planet
Busy Neighbor Monday, May 25, 2015
Ringfest Wednesday, May 20, 2015
The constellation Corvus, near brilliant Spica
Sailing On Sunday, May 17, 2015
Hubble Space Telescope view of the core of M13, a globular cluster in Hercules
Old Sparklers Tuesday, May 12, 2015
Artist's concept of Scholz's Star passing close to the solar system
Former Neighbor Thursday, May 7, 2015
The Messenger spacecraft's final image of the surface of Mercury
The End Thursday, April 30, 2015
Hubble Space Telescope image of a young star cluster
Anniversary Portrait Thursday, April 23, 2015
Dawn images of north pole of Ceres
Over the Top Friday, April 17, 2015
Hubble Space Telescope image of spiral galaxy Messier 66
Evidence of an Encounter Sunday, April 12, 2015
Infrared view of the interstellar medium
Filling the Void Thursday, April 9, 2015
Cassini view of Saturn's family of gings
Family Portrait Tuesday, April 7, 2015
Rosetta view of Comet Churyumov-Gerasimenko on March 22, 2015
Messy Comet Thursday, April 2, 2015
G2 survives its swing around the black hole at the center of the Milky Way
Narrow Escape Friday, March 27, 2015
M3, a globular star cluster
Reborn Stars Tuesday, March 17, 2015
Artist's concept of MY Camelopardalis, a contact binary star system
Close Twins Sunday, March 15, 2015
Image of a powerful solar flare on March 11, 2015
Solar Flare Thursday, March 12, 2015
Hubble Space Telescope view of Abell 2744, a massive galaxy cluster
On the Frontier Monday, March 9, 2015
A full rotation of Ceres as seen by the Dawn mission
Final Approach Tuesday, March 3, 2015
Dawn image of mysterious bright spots on Ceres, February 19, 2015
Bright Mysteries Thursday, February 26, 2015
Canopus, the second-brightest star in the night sky, from the space station
Stellar Beacon Tuesday, February 24, 2015
The Milky Way galaxy's spiral arms
Arming the Milky Way Wednesday, February 18, 2015
Hubble Space Telescope view of V838 Monocerotis in 2006
Brilliant Echo Wednesday, February 11, 2015
Depiction of National Ignition Facility probing the interior of a giant planet
Into Darkness Monday, February 2, 2015
Hubble image of the aftermath of a galactic collisio
Beautiful Disruption Friday, January 30, 2015
Dawn image of Ceres, January 25, 2015
Getting Closer Wednesday, January 28, 2015
View of the underground Soudan Laboratory
Underground Astronomy Monday, January 26, 2015
A brilliant aurora from the International Space Station
Fiery Sky Wednesday, January 21, 2015
The Huygens probe arrives at Titan in 2005
Cold Landing Wednesday, January 14, 2015
Gemini Observatory image of VV 166 galaxy group
Galaxies Galore Sunday, January 11, 2015
Three dwarf planets shown to scale with Earth and Moon
Dwarf Planets Monday, January 5, 2015
Lunar Giant Tuesday, December 30, 2014
Rigel, the brightest star of Orion
Stellar Stunner Monday, December 22, 2014
The Andromeda galaxy, M31
Old News Saturday, December 20, 2014
Cassini close-up of Saturn's clouds
Impressions of a Planet Thursday, December 18, 2014
Earliest sunsets in December
Early Sunsets Monday, December 15, 2014
Possible origin of the Ocean of Storms
Cracks in the Moon Thursday, December 11, 2014
Superflare on one of the stars of DG Canum Venaticorum
Tiny Star, Big Outburst Wednesday, December 3, 2014
Hubble Space Telescope view of Tadpole Galaxy
Galactic Tadpole Thursday, November 27, 2014
Double Dribble Thursday, November 20, 2014
COBE view of the cosmic microwave background
Afterglow Tuesday, November 18, 2014
Sunlight glints off a hydrocarbon lake on Titan, the largest moon of Saturn
World of Lakes Tuesday, November 11, 2014
Cassini view of a crescent Titan, largest moon of Saturn
Hazy Skies Sunday, November 9, 2014
View of a newly forming planetary system around the young star HL Tauri
Planet Tracks Thursday, November 6, 2014
Messenger view of the surface of Mercury
Getting Closer Thursday, October 30, 2014
Artist's concept of Comet Siding Spring approaching Mars
Martian Encounter Thursday, October 16, 2014
October 7 view of Rosetta spacecraft and its target comet
Neighbors Tuesday, October 14, 2014
Elephant Trunk Nebulan
Elephant's Trunk Sunday, October 12, 2014
Fomalhaut in early October
Lonely Star Wednesday, October 1, 2014
Possible image of a moon being born in Saturn's rings
New Moon Rising? Saturday, September 27, 2014
Through the Glow Tuesday, September 16, 2014
Hubble image of star cluster M15
Old Family Thursday, September 11, 2014
September 9, 2014, view of Curiosity rover's surroundings on Mars
Going Strong Tuesday, September 9, 2014
View of Saturn's rings from Cassini
Clearing the Gaps Sunday, August 31, 2014
Cat's Eye Nebula from Hubble Space Telescope
Colorful Demise Friday, August 29, 2014
NGC 1398, a spiral galaxy in the constellation Fornax
Strangely Familiar Saturday, August 23, 2014
Jetting Across the Universe Tuesday, August 12, 2014
August 6, 2014, view of Comet Churyumov-Gerasimenko by Rosetta
Getting Closer Thursday, August 7, 2014
August 3, 2014, image of Comet Churyumov-Gerasimenko from Rosetta
Arrival Wednesday, August 6, 2014
Giant impact craters on Saturn's moons Mimas and Tethys
Survivors Monday, August 4, 2014
Ranger 7 images of the Moon, July 31, 1964
Success at Last Thursday, July 31, 2014
Artist's concept of hot gas funneling toward black hole at center of Milky Way
Dark Center Tuesday, July 29, 2014
A view of the busy Milky Way
Busy Galaxy Thursday, July 24, 2014
Diagram comparing sizes of Sun, Aldebaran
Giant Eye Monday, July 21, 2014
Artist's concept of comet impact on Jupiter
Strike One! Wednesday, July 16, 2014
Magellanic clouds above the ALMA radio telescope array
Cloudy Neighbors Monday, July 14, 2014
False-color image of M27, the Dumbbell Nebula
Last Gasp Saturday, July 12, 2014
Fading Away Sunday, June 29, 2014
Infrared view of Serpens South star cluster and nebula
Unmasking Hidden Stars Tuesday, June 24, 2014
Hubble Space Telescope view of Eta Carinae
Future Fireworks Monday, June 16, 2014
Three solar flares in early June 2014
Solar Fireworks Thursday, June 12, 2014
Cassini spacecraft passes Titan
A Decade at Saturn Tuesday, June 10, 2014
Combined visible, X-ray image of M51, the whirlpool galaxy
Colorful Whirlpool Wednesday, June 4, 2014
M44, the Beehive Cluster
Vanishing Beehive Monday, June 2, 2014
NGC 3590
Young and Future Stars Thursday, May 22, 2014
Otto Struve, first director of McDonald Observatory
First Director Thursday, May 8, 2014
Construction of McDonald Observatory's 82-inch telescope, ca. 1934
Celebrating Tuesday, May 6, 2014
Participants in the McDonald Observatory dedication, May 5, 1939
Getting Started Monday, May 5, 2014
Artist's concept of water vapor around Ceres; HST image of Ceres
Watery Dwarf Friday, May 2, 2014
Diagram showing the layouts of several exoplanet systems
Going Farther Wednesday, April 30, 2014
Artist's concept of a range of recently discovered exoplanets
Planet Hunting Monday, April 28, 2014
Autographs from the dedication of McDonald Observatory
Who's Who Wednesday, May 7, 2014
HST image of thousands of galaxies
Galaxies Galore Thursday, April 17, 2014
Cassini image of a possible satellite growing in the outer regions of Saturn's r
Giving Birth? Tuesday, April 15, 2014
Black-widow pulsar
Doomed Mate Thursday, April 10, 2014
Artist's concept of a solar sail
Sailing Along Thursday, April 3, 2014
WISE view of the Vela Nebula in Cygnus
Glowing Civilizations? Tuesday, April 1, 2014
Mariner 10 at Mercury
First Encounter Saturday, March 29, 2014
The Milky Way glows above the Nevada desert
Dig Site Monday, March 24, 2014
The Condor galaxy
Night of the Condor Saturday, March 15, 2014
A rare yellow hypergiant star in Centaurus
Jolly Yellow Giant Thursday, March 13, 2014
Artist's concept of a double sunset on exoplanet Kepler 16
Double Sunset Wednesday, March 5, 2014
Artist's concept of exoplanet system KOI-961, discovered by Kepler spacecraft
Worlds Galore Monday, March 3, 2014
Space-based infrared view of the Rosette Nebula
Ruffled Rose Friday, February 28, 2014
NGC 2264, a stellar nursery in Monoceros
Star Factory Wednesday, February 26, 2014
Downhill Racer Saturday, February 22, 2014
Diagram of Orion, the hunter
Orion's Belt Sunday, February 16, 2014
Fresh Martian impact crater seen by an orbiting spacecraft in late 2013
Fresh Impact Friday, February 7, 2014
A discharge of energy from the Z Machine at Sandia National Laboratories
Zapped! Monday, February 3, 2014
Close-up view of the California Nebula in infrared light.
California Nebula Saturday, January 25, 2014
Close-up Hubble Space Telescope view of the Orion Nebula
Beautiful Birthplace Thursday, January 23, 2014
Artist's concept of Rosetta contacting Earth
Back to Work Monday, January 20, 2014
Artist's concept of black hole binary star system in the galaxy M101
Brilliant Darkness Thursday, January 16, 2014
Hubble Space Telescope view of M83 galaxy
Glowing Pinwheel Friday, January 10, 2014
Artist's concept of weather on a brown dwarf
Hot Rain Wednesday, January 8, 2014
A giant asteroid slams into Earth, leading to global extinctions
Impact! Monday, January 6, 2014
Artist's concept of a Mars Exploration Rover landing on Mars in 2004
Follow the Bouncing Rover Saturday, January 4, 2014
An early view of the primary mirror of McDonald Observatory's first telescope
Seeing the Light Tuesday, December 31, 2013
Three views of Comet Kohoutek
Comet Flop Thursday, December 26, 2013
Gold may have been created in the mergers of neutron stars
Golden Mergers Monday, December 23, 2013
RS Puppis, a supergiant star seen by Hubble Space Telescope
Dusty Skies Wednesday, December 18, 2013
China's Yutu rover on the Moon in an artist's concept
Lunar Returns Saturday, December 14, 2013
Space station view of Comet ISON and other celestial objects
Doomed Comet Wednesday, December 4, 2013
A Cassini view of the hexagonal cloud pattern surround Saturn's south pole
Planetary Cyclops Sunday, December 1, 2013
View of Comets ISON and Encke from a Sun-watching spacecraft
Sizzling Comets Wednesday, November 27, 2013
The life and times of William Herschel
Stellar Musician Thursday, November 14, 2013
Telescopes at the south pole
Antarctic Adventures Wednesday, November 13, 2013
Telescopic view of M33, the Triangulum Galaxy
Pirouetting Octopus Sunday, November 10, 2013
Artist's concept of extrasolar planet Kepler 78b, an Earth-sized world
Hot Rock Thursday, October 31, 2013
The Planck space telescope and its view of the cosmic microwave background
Going Dark Thursday, October 24, 2013
Hubble Space Telescope view of Comet ISON in October 2013
Getting Closer Friday, October 18, 2013
Hubble Space Telescope images of the Fomalhaut star system
Giant Planet of Mystery Tuesday, October 15, 2013
Rio Tinto, a river in Spain, is a Mars analog
Red River Wednesday, October 9, 2013
Magellan view of the giant Sapas Mons volcano on Venus
Venusian Vulcanism Monday, October 7, 2013
The Cat's Paw Nebula in submillimeter and near-infrared light
Star Maker Friday, September 27, 2013
Dumbbell Nebula, M27
Grand Finale Tuesday, September 24, 2013
Galileo enters Jupiter's atmosphere
Fiery Farewell Saturday, September 21, 2013
Lightning behind space shuttle Discovery
Just Whistle Thursday, September 19, 2013
Artist's concept of Spitzer Space Telescope
Heat Seeker Friday, August 23, 2013
The star Gamma Cas blows away gas from a nearby nebula
Star Blaster Sunday, August 18, 2013
Artist's concept of planet HAT-P7b
Hot Spot Friday, August 16, 2013
Cassini view of the cracked crust of Saturn's moon Dione
Cracked Up Monday, August 12, 2013
Space-faring spider Arabella spins her first web in orbit, 1973
Spiders in Space Monday, July 29, 2013
Diagram shows Neptune and some of its moons, including one discovered in 2013
Second-Look Moon Monday, July 22, 2013
Artist's concept of a blue exoplanet
Blue-Hot Planet Saturday, July 13, 2013
View of the 30 Doradus star cluster and the massive binary system R144
Megastars Tuesday, July 9, 2013
Visible light (left) and infrared view of the dark molecular cloud Barnard 68
Looking into the Darkness Sunday, July 7, 2013
Hubble Space Telescope view of Comet ISON, May 2013
Closing In Tuesday, July 2, 2013
Ultraviolet view of spiral galaxy NGC 6744 from the GALEX spacecraft
End of the Line Saturday, June 29, 2013
Alpha Magnetic Spectrometer aboard the International Space Station
Magnetic Personality Wednesday, June 26, 2013
Sunset from the International Space Station
Eyes on High Monday, June 24, 2013
Clouds above the south pole of Titan
Titanic Vortex Wednesday, June 19, 2013
MESSENGER view of crater Degas on Mercury
Painting a Planet Monday, June 17, 2013
Dusty Vega system
Dust Trap Friday, June 14, 2013
Starbirth region on the edge of the Milky Way galaxy
Starbirth Thursday, June 6, 2013
Images of solar telescopes around the world
Fanciful Eyes Monday, June 3, 2013
Hubble Space Telescope image of M101
Stellar Pinwheel Friday, May 31, 2013
Ligeia Mare, one of the largest lakes on Titan, the largest moon of Saturn
Storms Ahead? Wednesday, May 22, 2013
Combined visual and millimeter-wave view of Orion Nebula, M42
Cold Fire Thursday, May 16, 2013
Skylab in orbit
First Space Station Tuesday, May 14, 2013
The powerful quasar SDSS J1106
Phenomenal Cosmic Power Friday, May 10, 2013
Hubble Space Telescope, May 2009
Recalibrating Monday, May 6, 2013
Cassini view of Saturn's north pole
Eye of the Storm Thursday, May 2, 2013
Hubble Space Telescope image of Comet ISON, April 2013
Closing In Wednesday, April 24, 2013
Artist's depiction of planet orbiting Alpha Centauri B
Close Neighbor Sunday, April 21, 2013
Hubble view of Coma Cluster of galaxies
Crowning Glory Friday, April 19, 2013
The Antennae galaxies
Getting Together Tuesday, April 16, 2013
Infrared view of Betelgeuse
Messy Star Friday, April 12, 2013
Lunar Orbiter view of Aristarchus crater
Bright Crater Thursday, March 28, 2013
X-ray view of a gamma-ray burst
Zapping Earth Tuesday, March 26, 2013
Curiosity rover view of Mount Sharp, March 2013
Sharp Destination Tuesday, March 19, 2013
Artist's concept of a neutron star's crust cracking
Cracking Up Friday, March 22, 2013
Comet C/2011 L4 Panstarrs in the western evening sky in March
Sneaky Comet Sunday, March 10, 2013
A black hole is created in the Large Hadron Collider, then quickly evaporates
Making a Black Hole Tuesday, February 26, 2013
Self-portrait of Curiosity rover on Mars, February 2013
Self-Portrait Monday, February 18, 2013
Artist's concept of a distant quasar
Fiery Galaxy Tuesday, February 5, 2013
Close-up of the core of M31
M31 Blues Tuesday, January 29, 2013
Visible- and infrared-light views of Orion
Double Vision Friday, January 25, 2013
Star forming region in Orion
Hiding Places Wednesday, January 23, 2013
High-resolution view of Phobos, moon of Mars
Doomed Moon Sunday, January 13, 2013
Gemini Observatory view of outskirts of Orion Nebula
Knotheads Thursday, January 10, 2013
Combined optical and X-ray view of two possible black holes in the galaxy IC 342
On the Job Tuesday, January 8, 2013
Hubble Space Telescope view of globular cluster M2
Stars Galore Sunday, January 6, 2013
Comet McNaught, 2007
Bright Interlopers Wednesday, January 2, 2013
Soyuz spacecraft approaches space station with Moon in background
Ready for Arrival Monday, December 31, 2012
Cassini images of Dione, Rhea
Saturnian Two-Fer Thursday, December 27, 2012
Van Allen Probes and Earth's Van Allen radiation belts
Dangerous Exposure Thursday, December 20, 2012
Artist's concept of Mariner 2 flying past Venus, December 14, 1962
First Encounter Thursday, December 13, 2012
Apollo 17 astronaut Gene Cernan drives his lunar rover
End of the Road Monday, December 10, 2012
Hubble image of an edge-on galaxy, ESO 318-13
All that Glitters Tuesday, December 4, 2012
Curiosity view of Rocknest on Mars
Rocky Home Thursday, November 29, 2012
Orion, Jupiter, and other sights in late November
Orion Rising Monday, November 26, 2012
Cassini view of a crescent Titan
Enigmatic Moon Monday, November 19, 2012
Multispectral view of giant star-forming regions at the center of the Milky Way
Molecule Factory Tuesday, November 13, 2012
South polar vortex on Saturn, seen by Cassini
Saturnian Vortex Sunday, November 11, 2012
HESS telescopes in Namibia, which study the gamma-ray universe
Extreme Telescope Thursday, November 8, 2012
Nighttime view of the southeastern U.S. from the International Space Station
Blue Night Monday, November 5, 2012
Infrared/ultraviolet view of Helix Nebula
Colorful Demise Tuesday, October 23, 2012
Planetary nebula R Leporis
Stellar Twister Thursday, October 11, 2012
The nearby starburst galaxy IC 10
Active Neighbor Monday, October 8, 2012
The 'lucky' stars of Aquarius
'Lucky' Stars Saturday, October 6, 2012
Portion of Hubble Extreme Deep Field
Extreme Astronomy Tuesday, September 25, 2012
Infrared image of the star Fomalhaut (center) and surround debris ring
Messy Building Zone Tuesday, September 18, 2012
Andromeda and the Milky Way head for a galactic pile-up
Collision Course Wednesday, September 12, 2012
Hubble image of a pair of galaxies
Bright Companions Friday, September 7, 2012
Artist's concept of the Gamma Cephei star system
Stellar Geometry Tuesday, September 4, 2012
A Voyager spacecraft and the cover of a record of Earth sights and sounds
Words From Home Monday, August 20, 2012
Illustration depicts the contact binary system W Ursae Majoris
Two-for-One Offer Wednesday, August 15, 2012
Early view of the rim of Gale Crater
Inside the Wall Sunday, August 12, 2012
Mars Science Laboratory heatshield falls away
Martian Litter Friday, August 10, 2012
August 8, 2012, view of Mars from the Curiosity rover
Getting Acquainted Wednesday, August 8, 2012
Composite view of Curiosity rover landing and operating on Mars
Drop In, Stay Awhile Monday, August 6, 2012
Skycrane lowers Mars Science Laboratory to the Martian surface
Rube Goldberg Meets Mars Sunday, August 5, 2012
Artist's concept of Mars Science Laboratory approaching the Red Planet
Final Approach Friday, August 3, 2012
The Lagoon Nebula, M8, from the European Southern Observatory
Pink Lagoon Thursday, July 26, 2012
Current and future pole stars
Moving On Monday, July 23, 2012
Alexandria, Egypt, as seen from the International Space Station
City of Power Friday, July 20, 2012
False-color view of Comet Swift-Tuttle, 1992
Swift Comet Monday, July 16, 2012
Altair is one of the three planets of the Summer Triangle
Flying Eagle Thursday, July 12, 2012
H-R Diagram
Stellar Plot Saturday, July 7, 2012
Hubble Space Telescope view of M104, the Sombrero Galaxy
Galactic Hat Dance Monday, July 2, 2012
A flare on the surface of the star HD 189733 blasts away the atmosphere of an or
Zapped! Friday, June 29, 2012
The remnants of two merged galaxies
Fast Exit Monday, June 18, 2012
Infrared image of the Carina Nebula from space-based Herschel Observatory
Busy Nursery Wednesday, June 6, 2012
Hubble Space Telescope view of galaxy ESO 243-49
Little Giant Tuesday, May 29, 2012
A long-exposure view of Earth and the stars from the International Space Station
Around and Around We Go Saturday, May 26, 2012
Hercules, the strongman, depicted as he rises in the eastern sky
The Strongman Tuesday, May 22, 2012
Star Stream Tuesday, May 15, 2012
Simulation of a supermassive black hole disrupting a star
Messy Meal Friday, May 4, 2012
Beams of light shine through the Egg Nebula
Stellar Headlights Tuesday, May 1, 2012
Combined X-ray, optical, and radio view of the galaxy Centaurus A
Busy Galaxy Sunday, April 29, 2012
Two views of Saturn's outermost ring
Wiggly Ring Thursday, April 26, 2012
Apollo 16 lunar module, Orion, on the Moon's Plains of Descartes
Almost Home Saturday, April 21, 2012
Space shuttle Discovery flies above Washington, DC, April 17, 2012
Last Stop Thursday, April 19, 2012
Saturn's battered moon Tethys seen by the Cassini Spacecraft, April 14, 2012
Wrinkly Moon Tuesday, April 17, 2012
Victor Hess prepares to ascend in a balloon to study cosmic rays, 1912
Radiation Hunter Saturday, April 7, 2012
Artist's concept of the Kepler-35 system, with a giant planet orbiting two stars
Seeing Double Wednesday, April 4, 2012
Artist's concept of stars and a gas cloud near the Milky Way's central black hol
Snack Time Thursday, March 29, 2012
Omega Centauri, the possible core of a defunct galaxy
Invader! Friday, March 23, 2012
Space-based infrared view of the Large Magellanic Cloud
Busy Neighbor Tuesday, March 20, 2012
Optical and X-ray image of the galaxy cluster Abell 383
Brilliant Darkness Friday, March 16, 2012
A powerful solar flare erupts on March 6, 2012
Stormy Skies Thursday, March 8, 2012
The Moon passes by Mars and the star pattern of Leo, March 2012
Doubly Brilliant Tuesday, March 6, 2012
Voyager mission enhanced-color image of Jupiter's Great Red Spot
Planetary Impressionism Sunday, February 26, 2012
Sirius B, the white-dwarf companion to Sirius, compared to the size of Earth
Stellar Afterlife Wednesday, February 1, 2012
A January 23, 2012 solar flare
Restless Sun Monday, January 30, 2012
Endeavour Crater, winter home of the Opportunity Mars rover
Winter Wonderland Thursday, January 26, 2012
Earth's atmosphere distorts the Moon as seen from the International Space Statio
Squashed Moon Tuesday, January 17, 2012
Infrared view of starbirth in the vast nebula complex Cygnus X
Busy Nursery Friday, January 13, 2012
Artist's concept of the pulsar and planets in the system PSR B1257+12
Second-Chance Planets Sunday, January 8, 2012
Artist's concept of GRAIL spacecraft measuring the Moon's gravitational field
Lunar Arrival Friday, December 30, 2011
Saturn's moons Titan and Dione above Saturn, with Saturn's rings
Saturnian Traffic Jam Monday, December 26, 2011
View of Comet Lovejoy from the International Space Station
Christmas Comet Friday, December 23, 2011
Horsehead Nebula photographed through a McDonald Observatory telescope
3D Horsehead Tuesday, December 20, 2011
A comet plunges toward the Sun
Survivor: Comet Friday, December 16, 2011
Galactic Swirl Wednesday, December 14, 2011
Plumes of gas spew into space from the roiling surface of Betelgeuse, the bright
Stellar Timebomb Thursday, December 1, 2011
Ultraviolet view of Venusian clouds from Venus Express orbiter
Cloudy Skies Saturday, November 26, 2011
Artist's concept of Curiosity rover on Mars
Ready to Roll Wednesday, November 23, 2011
Optical and radio image of the Carina Nebula, a vast stellar nursery
Birthplace of the Stars Thursday, November 17, 2011
The Russian Phobos-Grunt Mars mission launches on November 8, 2011
Phobos Flop? Friday, November 11, 2011
The glow of the aurora from the International Space Station
Heavenly Lightshow Sunday, November 6, 2011
The moon Phobos floats above Mars
Martian Target Thursday, November 3, 2011
Galileo view of Gaspra, the first asteroid visited by a spacecraft
First Encounter Saturday, October 29, 2011
An artist's concept of the darkest planet yet discovered
Dark World Thursday, October 27, 2011
Cassini view of Saturn's moon Enceladus in front of the planet's rings
Saturnian Encounter Tuesday, October 25, 2011
Two globular clusters; a previously known one at right, and a new one in circle
Star City Wednesday, October 19, 2011
An aquanaut practices space exploration techniques underwater
Diving into the Future Monday, October 17, 2011
Artist's concept of a starship
To Boldly Go... Saturday, October 1, 2011
IC 2944, a stellar nursery in the constellation Centaurus
Seeing Red Thursday, September 22, 2011
Artist's concept of global ocean on Jupiter's moon Europa
Water World Friday, September 16, 2011
A thick torus of dust encircles a quasar
Water Works Tuesday, September 13, 2011
2011 image of the Apollo 12 landing site, from Lunar Reconnaissance Orbiter
Still Standing Friday, September 9, 2011
Map of the Moon's gravitational field
Lunar Lumpiness Tuesday, September 6, 2011
Composite view of a giant storm on Saturn from the Cassini spacecraft
Stormy Skies Wednesday, August 31, 2011
The star cluster M7
Aging Family Sunday, August 28, 2011
NGC 4438 and NGC 4435, galaxies in Virgo
Beautiful Eyes Thursday, August 25, 2011
Voyager 2 view of the Adams Ring at Neptune
Pulverized Moon Monday, August 22, 2011
Yerkes Observatory in Wisconsin is home to the world's largest refractor
Still Going Thursday, August 18, 2011
The Necklace Nebula, the remains of a dying star in Sagittarius
Ring of Fire Monday, August 15, 2011
Panoramic view of Endeavour crater on Mars, imaged by the Opportunity rover
Final Destination Thursday, August 11, 2011
Possible rivulets of water flowing on Mars
Drippy Planet Monday, August 8, 2011
International Space Station viewed from space shuttle Atlantis, July 19, 2011
Last Look Wednesday, August 3, 2011
Rock varnish on a rock from the Atacama Desert
Bacteria Colony? Friday, July 29, 2011
Scientists are studying rocks in Chile to learn about possible life on Mars
Looking for Life Wednesday, July 27, 2011
Chile's Atacama Desert is an analog for studying conditions on Mars
Mars on Earth Tuesday, July 26, 2011
Atlantis lands on July 21, 2011, ending the space shuttle program
That's All, Folks! Friday, July 22, 2011
Dawn's first view of Vesta after entering orbit, July 2011
Settling In Monday, July 18, 2011
Dawn spacecraft view of asteroid Vesta shortly before entering orbit
First Stop Friday, July 15, 2011
Space shuttle Atlantis approaches the International Space Station, July 2011
Final Approach Wednesday, July 13, 2011
Atlantis launches on the final space shuttle mission, July 8, 2011
Last Call Friday, July 8, 2011
Cassini view of Iapetus, a moon of Saturn
Two-Toned Moon Thursday, July 7, 2011
Dust coats the spacesuit of Apollo 17 astronaut Gene Cernan
Dirty Moonwalker Wednesday, June 22, 2011
A solar eruption on June 7, 2011
Big Splash Tuesday, June 7, 2011
Venus's path across the Sun during the transit of 1761
Bright Passage Monday, June 6, 2011
Artist's concept of upgraded Hobby-Eberly Telescope
Facelift for Science Friday, June 3, 2011
Stars and cities streak past space shuttle Endeavour
Fast Flyer Wednesday, June 1, 2011
A painting by Andrew Wyeth depicts preparations for a Gemini launch in the 1960s
Ready for Liftoff Monday, May 30, 2011
Alpha Magnetic Spectrometer-2 attached to the International Space Station
On Duty Monday, May 23, 2011
Artist's concept of a free-floating planet in the Milky Way galaxy
Free Agent Thursday, May 19, 2011
Space shutle Endeavour launches on its final mission, June 16, 2011
Final Endeavour Monday, May 16, 2011
Cassini view of geysers on Saturn's moon Enceladus squirting far into space
Faithful Geysers Friday, May 13, 2011
Alan Shepard enters his capsule, then launches aboard Freedom 7, May 5, 1961
A-OK Flight Thursday, May 5, 2011
Lightning strikes near space shuttle Endeavour, April 28, 2011
Close Call Monday, May 2, 2011
Artist's concept of TW Hydra, a young star encircled by a disk of gas and dust
Messy Youngster Monday, April 25, 2011
Artist's concept of the planetary system Kepler 11
Close Family Friday, April 22, 2011
A view of NGC 3582, a large stellar nursery in Karina
Life and Death Tuesday, April 19, 2011
The Opportunity rover crosses the Martian plains toward Endeavour crater
Crater Crawling Saturday, April 16, 2011
Launches of Vostok 1, STS-1 (space shuttle Columbia)
Double Date Tuesday, April 12, 2011
Infrared view of planetary nebula NGC 4361 in Corvus
Cotton-Candy Star Sunday, April 3, 2011
Storm clouds swirl through Saturn's atmosphere in an image from Cassini
Artistic Storm Monday, March 28, 2011
New stars and the raw materials for more stars in the stellar nursery NGC 6729
Star Maker Thursday, March 24, 2011
Artist's concept of Messenger orbiting Mercury
Safe Arrival Friday, March 18, 2011
X-ray and radio image of galaxy M87
Close to the Monster Thursday, March 10, 2011
Irregular galaxy Henize 2-10, which appears to contain a supermassive black hole
Small But Powerful Tuesday, March 8, 2011
Giotto spacecraft view of Halley's Comet, March 1986
Halley's Armada Saturday, March 5, 2011
Sky view from space shuttle Discovery, February 2011
Nice View Wednesday, March 2, 2011
Space shuttle Discovery launch, February 24, 2011
Last Show Friday, February 25, 2011
M78, a reflection nebula in Orion
Beautiful Reflection Monday, February 21, 2011
Comet Tempel 1 as seen by the Stardust spacecraft, February 14, 2011
Close Cometary Encounter Thursday, February 17, 2011
Comet Tempel-1 from the Stardust spacecraft, February 14, 2011
Second Glance Tuesday, February 15, 2011
Newly forming planetary system around Beta Pictoris
Messy Star System Thursday, February 10, 2011
Ground and orbital views of Opportunity rover at Santa Maria crater
Looking In Tuesday, February 8, 2011
Spiral galaxy NGC 3621 in the constellation Hydra
Galactic Sparkler Wednesday, February 2, 2011
Antares, brightest star of Scorpius, shines through the rings of Saturn
Peeking Giant Friday, January 28, 2011
False-color image of Orion Nebula from European Southern Observatory
Delicate Power Friday, January 21, 2011
Earth is in the middle of the Sun's habitable zone
In the Zone Tuesday, January 18, 2011
Reiner Gamma, a prominent lunar swirl in the Ocean of Storms
Lunar Swirl Wednesday, January 12, 2011
Hubble view of Hanny's Voorwerp and the galaxy IC 2497
In the Spotlight Tuesday, January 11, 2011
Infrared image of the Lagoon Nebula
Blue Lagoon Thursday, January 6, 2011
The Horsehead Nebula
Galloping Nebula Saturday, January 8, 2011
Over the Rim Friday, December 31, 2010
Opportunity rover view of Santa Maria crater
Crater Climbing Thursday, December 30, 2010
The Opportunity rover casts it shadow on the rim of a Martian crater
Martian Robot Wednesday, December 29, 2010
Geysers on Enceladus
Fizzy Moon? Monday, December 27, 2010
Shields like those of the USS Enterprise may protect real space travel
Shields Up! Friday, December 17, 2010
Visible and X-ray image of a supernova remnant in the Large Magellanic Cloud
Holiday Decoration Thursday, December 16, 2010
Enceladus passes in front of Saturn's rings
Saturnian Iceball Wednesday, December 8, 2010
Sun glints off a lake on Saturn's moon Titan
Sparkling Lake Tuesday, November 30, 2010
IC 2118, the Witch Head Nebula
Witch Head Nebula Friday, November 26, 2010
China Clipper Sails the Pacific Ocean
Night Over Water Monday, November 22, 2010
NGC 7252, aka the Atoms-for-Peace galaxies
Atomic Pile-up Saturday, November 20, 2010
Lunokhod image of its tracks on the lunar surface
Found It! Monday, November 15, 2010
The California Nebula, in Perseus
Stately Nebula Saturday, November 6, 2010
Comet Hartley-2 from Deep Impact Spacecraft
Fowl Comet? Friday, November 5, 2010
Deep Impact view of Comet Hartley-2
Closing In Thursday, November 4, 2010
Ultraviolet image of the region around the Ghost of Jupiter Nebula
Astronomical Ghost Sunday, October 31, 2010
Six Spiral Galaxies from European Southern Observatory
Galaxies Galore Friday, October 29, 2010
Cassini image of Saturn's moon Mimas, October 2010
Scarface Monday, October 25, 2010
Comet Hartley-2 from McDonald Observatory
Jolly Green Comet Thursday, October 21, 2010
Infrared view of Comet Hartley 2 from WISE
Heading for a Rendezvous Wednesday, October 6, 2010
Artist's concept of a protoplanetary disk with wide gaps
Planet Nursery Monday, October 4, 2010
Ground-based image of the galaxy cluster Abell 2151, in Hercules
Galaxies Galore Friday, October 1, 2010
Luna 16 diagram
To the Moon and Back Friday, September 24, 2010
A multi-spectral view of a supernova remnant in the Small Magellanic Cloud
Life from Death Friday, September 17, 2010
MIT professor Dava Newman models a new type of space suit
Dressed for Success (in Space) Wednesday, September 15, 2010
NGC 4666, a starburst galaxy
Lively Galaxy Friday, September 3, 2010
Evaporating planet around the star HD209458
Puffy Planet Thursday, August 26, 2010
Two Moons Rising Monday, August 16, 2010
Cassini snapped views of Saturn's moons Enceladus and Tethys.
Two Moons Rising Monday, August 16, 2010