History

Resources

Explorations in 2013 Find out about scheduled missions to our solar...
Explorations in 2011 Find out about scheduled missions to our solar...
Earth’s Moon Earth's partner in its yearly trek around the...
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,...
Gemini, the Twins Gemini is easy to find as it glides high...
Taurus, the Bull Taurus, the bull, is marked by a V-shaped...
Sagittarius, the Archer Sagittarius, the archer, slides low across the...
Ursa Major, the Great Bear Ursa Major — the great bear — is always above...
Finding Earth-Like Planets Astronomers have discovered far more planets...
Exoplanets As the list of known planets beyond the solar...
Pluto After 76 years of glory, the small ball of rock...
Equipment Tips The only instrument that most beginners need is...
Pick a Good Viewing Spot Your own back yard will do just fine. Then, as...
Venus Cloud-covered Venus is the second planet from...
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...
Our Star, the Sun By human standards, the Sun is eternal. It rises...
Explorations in 2014 Find out about scheduled missions to our solar...
Explorations in 2012 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,...
Explorations in 2010 Find out about scheduled missions to our solar...

Radio Programs

World War II Heading toward World War II Tuesday, September 2, 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
Doomed Planets Doomed planets around a dying star Sunday, August 24, 2014
Planet Bonanza A plenitude of exoplanets Saturday, August 23, 2014
Moon and Planets A bright show in the dawn sky Friday, August 22, 2014
More Venus and Jupiter Aligning two celestial headlights Sunday, August 17, 2014
Planet Pairings Pairs of planets bracket the Sun Saturday, August 16, 2014
Anders Angstrom Scanning the “barcode” of the Sun Wednesday, August 13, 2014
Ranger 7 A successful crash in the Moon Race Thursday, July 31, 2014
Sagittarius A steaming teapot in the southern sky Thursday, July 24, 2014
Moon and Venus Visiting the cool mountains of Venus Wednesday, July 23, 2014
Spearhead Spearheading a look at the Seven Sisters Sunday, July 20, 2014
Venus and Mercury Bright, hot planets in the dawn sky Friday, July 11, 2014
Moon, Mars, and Spica A close but wide-spread trio Saturday, July 5, 2014
Feeling the Heat Looking at the Sun from near and far Friday, July 4, 2014
Fresh Ideas Looking for fresh ideas Thursday, July 3, 2014
Pitching Ideas Pitching ideas for new missions Wednesday, July 2, 2014
Moon and Regulus Locking the Moon in position Tuesday, July 1, 2014
Cygnus Rising A starry bird and a Mayan king Monday, June 30, 2014
Moon and Jupiter Watching the twilight fade away Sunday, June 29, 2014
Lyman Spitzer Probing matter between the stars Wednesday, June 25, 2014
Moon and Venus A brilliant early morning encounter Monday, June 23, 2014
Summer Solstice Plotting the motions of the Sun Friday, June 20, 2014
Leaping Gazelle A gazelle leaps across the sky Sunday, June 15, 2014
Disappearing Family A bright family drops from view Saturday, June 14, 2014
Summer Triangle Bright stars shine through the moonlight Friday, June 13, 2014
Menkent The nearby shoulder of a centaur Monday, June 9, 2014
Rebuilding Rebuilding astronomical history Thursday, June 5, 2014
Clark Telescopes Celebrating some astronomical masterpieces Wednesday, June 4, 2014
Moon and Mercury Ghostly apparitions in the evening sky Friday, May 30, 2014
Moon and Venus A case of deceptive beauty Saturday, May 24, 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
Planet Parade A parade of planets in the evening sky Friday, May 16, 2014
Moon and Saturn Zipping past a distant giant Wednesday, May 14, 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
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
61 Virginis Some nearby planetary neighbors Friday, April 25, 2014
Space Fair A world’s fair for the Space Age Tuesday, April 22, 2014
Changing Skies Seeing through the moonlight Friday, April 18, 2014
North Galactic Pole Gazing away from the Milky Way Saturday, April 12, 2014
Moon and Jupiter Winging through the skies of Jupiter Sunday, April 6, 2014
Moon in the Middle Bright stars packed around the Moon Saturday, April 5, 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
Mariner 10 at Mercury A first look at a little planet Saturday, March 29, 2014
More Moon and Venus Probing an unpredictable polar vortex Thursday, March 27, 2014
Moon and Venus A roller-coaster ride for a bright planet Wednesday, March 26, 2014
Crow and Cup The crow gets in a spot of bother Sunday, March 23, 2014
Yakov Zel’dovich From exploding bombs to exploding stars Saturday, March 8, 2014
In-Between Planets Super-Earths and mini-Neptunes Tuesday, March 4, 2014
Moon and Venus Love and beauty in the dawn sky Monday, February 24, 2014
Earths Galore Earth-like planets by the millions Saturday, February 22, 2014
Moon and Regulus Busy times for the Moon Friday, February 14, 2014
Brilliant Venus The “morning star” at its brightest Thursday, February 13, 2014
Moon and Venus A beautiful dawn encounter Monday, January 27, 2014
Morning Planets Lining up some early morning planets Sunday, January 26, 2014
Morning Planets Bright planets in the dawn sky Friday, January 17, 2014
Moon in the Middle Boxing in the gibbous Moon Sunday, January 12, 2014
Moon and Aldebaran Peeking at the Moon’s backside Saturday, January 11, 2014
Getting Started Cooking up a piece of glass Tuesday, December 31, 2013
Vanishing Venus The demise of the evening star Monday, December 30, 2013
Midnight Stars Celebrating with the stars Sunday, December 29, 2013
Winter Solstice Drawing up the winter solstice Saturday, December 21, 2013
Star Songs Tuning in to the stars Friday, December 20, 2013
Moon and Aldebaran Looking for a place to settle down Sunday, December 15, 2013
Super Origins A refugee from the planet Krypton Saturday, December 14, 2013
Annie Jump Cannon II Classifying the stars Wednesday, December 11, 2013
Annie Jump Cannon A rare astronomical opportunity Tuesday, December 10, 2013
Pickering’s Harem Pioneering at 25 cents an hour Monday, December 9, 2013
Moon and Venus Lighting up a Venusian day Wednesday, December 4, 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
Moon and Spica Following the rhythms of the night Thursday, November 28, 2013
Moon and Companions Growing fresh veggies on the Moon Monday, November 25, 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
Moon and Venus Lighting up a night sky Tuesday, November 5, 2013
The Crane A crane strides across the southern sky Thursday, October 31, 2013
War of the Worlds An attack from Mars Wednesday, October 30, 2013
More Moon and Jupiter Wrapping a spacecraft in plastic Friday, October 25, 2013
Tail Stars The back ends of two constellations Wednesday, October 23, 2013
Moon and Aldebaran Peeking through the moonlight Monday, October 21, 2013
Juno at Earth Getting a boost from home Tuesday, October 8, 2013
Moon and Jupiter Looking for a giant planet Saturday, September 28, 2013
To the Stars Building a road to the stars Tuesday, September 17, 2013
Winter Preview Taking a sneak peek at winter Sunday, September 15, 2013
A Tale of Two Skies Taking a spin on a merry-go-round Tuesday, September 10, 2013
Moon and Venus Phasing in on the “evening star” Sunday, September 8, 2013
Venus and Spica The always-hot “evening star” Thursday, September 5, 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 in the Middle The Moon and a bright triangle Saturday, August 31, 2013
Bernard Lovell Pioneering a new way to see the universe Thursday, August 29, 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, Spica, and Meteors A double feature in the night sky Sunday, August 11, 2013
More Moon and Venus Stirring up some lunar dust Saturday, August 10, 2013
Moon and Venus An unforgiving environment Friday, August 9, 2013
Water Carriers Starry vessels in the midnight sky Thursday, August 8, 2013
More Moon and Planets The Moon and a horde of planets Saturday, August 3, 2013
Moon and Planets The Moon and a lineup of planets Friday, August 2, 2013
Orbital Menagerie An entire zoo of space travelers Tuesday, July 30, 2013
Spinning in Orbit Spinning around the Earth Monday, July 29, 2013
Venus and Regulus A fairy tale in the evening sky Saturday, July 20, 2013
Bookends Bookending morning and evening skies Friday, July 19, 2013
Water World Diving into lunar research Wednesday, July 17, 2013
Solar Highway Following the path of the Sun Friday, July 12, 2013
Moon and Venus Heating up the “evening star” Wednesday, July 10, 2013
Delphinus Sneaking into astronomical history Monday, July 8, 2013
July Honoring a famous calendar maker Monday, July 1, 2013
Sky Test A test for dark night skies Sunday, June 30, 2013
Maximilian Wolf Snapping pictures of the night sky Saturday, June 22, 2013
Evening Treats Highlights of the evening sky Tuesday, June 18, 2013
Breaking Ground A “seagull” takes flight Sunday, June 16, 2013
More Moon and Planets Putting a new spin on the evening star Tuesday, June 11, 2013
Moon and Planets Lining up the “evening star” Monday, June 10, 2013
Sunquakes Rumbling through the Sun Sunday, June 9, 2013
At the Edge At the edge of the solar system Saturday, June 8, 2013
Young-Sun Paradox II A weight-loss plan for the Sun Friday, June 7, 2013
Young-Sun Paradox Turning up the thermostat Thursday, June 6, 2013
Changing Sun Our steadily changing Sun Wednesday, June 5, 2013
Solar Twins II Hunting for worlds like Earth Sunday, June 2, 2013
Bright Contrasts Different worlds with a similar look Monday, May 27, 2013
Evening Planets Celestial theater in the evening sky Saturday, May 25, 2013
Moon and Spica A small but vast astronomical gap Tuesday, May 21, 2013
Faith 7 The end of a space-age singles act Thursday, May 16, 2013
Nicolas Louis de Lacaille Mapping southern skies Wednesday, May 15, 2013
Skylab High-flying eyes on the Sun Tuesday, May 14, 2013
Moon and Jupiter A bright trio in the evening sky Saturday, May 11, 2013
Star Wheel Whirling around the North Star Wednesday, May 1, 2013
Moon and Saturn A futuristic buggy race Thursday, April 25, 2013
Sutter’s Mill A new strike at Sutter’s Mill Tuesday, April 23, 2013
Alpha Centauri Planet A nearby planetary neighbor Sunday, April 21, 2013
Moon and Regulus A special day for astronomy Saturday, April 20, 2013
The Naughty Crow A naughty crow angers the gods Monday, April 15, 2013
Moon and Jupiter Measuring the skin of the Moon Sunday, April 14, 2013
Time and Navigation A helpful device for seeing the world Thursday, April 11, 2013
Celestial Navigation Navigating by the stars Wednesday, April 10, 2013
Tau Boötis Keeping an eye on a star with a planet Sunday, April 7, 2013
Moon and Companions A bright highlight on the dark Moon Thursday, March 28, 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
The Bull’s Horns The Moon takes the bull by the horns Monday, March 18, 2013
Moon and Companions The Moon slides across the sky Sunday, March 17, 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
Alcyone Spinning up a bright young star Wednesday, February 27, 2013
Polaris III Poking into the life of a famous star Thursday, February 21, 2013
Polaris II The un-steady beat of the North Star Wednesday, February 20, 2013
Polaris Guided by the North Star Tuesday, February 19, 2013
Grand Sky A “grand” view of the night sky Saturday, February 2, 2013
Moon and Companions From leading light to a pale second Friday, February 1, 2013
Missed Opportunity Missing a “stellar” opportunity Monday, January 28, 2013
Moon and Regulus Hercules embarks on a quest Sunday, January 27, 2013
Winter Circle Bracketing the Winter Circle Saturday, January 26, 2013
Hot Planet The glow of a small but hot planet Thursday, January 24, 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
Gemini An uncommon story in the night sky Monday, January 14, 2013
Holiday Skies Lighting up the holiday sky Monday, December 31, 2012
Moon and Jupiter II Lighting up the Christmas-night sky Tuesday, December 25, 2012
Moon and Jupiter Bright lights for Christmas Eve Monday, December 24, 2012
Venus and Antares Snow clouds on a hot world? Saturday, December 22, 2012
Winter Solstice A changing calendar cycle Friday, December 21, 2012
The Sun III Looking for the surface of the Sun Wednesday, December 19, 2012
The Sun II The long trip before the journey begins Tuesday, December 18, 2012
The Sun Powering up the Sun Monday, December 17, 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
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
Moon and Companions Taking a peek at the Moon’s backside Saturday, November 10, 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
White-Dwarf Planets II Dead stars consume dead planets Wednesday, October 17, 2012
Moon and Regulus Brightening up the Moon Wednesday, October 10, 2012
Moonwatching Moonlight on an autumn night Saturday, September 22, 2012
Moon and Mars Prime real estate on other worlds Wednesday, September 19, 2012
Moonless Nights The wonders of a moonless night Sunday, September 16, 2012
Hot Jupiters Clearing out a star system Saturday, September 15, 2012
Andromeda A grand story in the night sky Monday, September 10, 2012
Moon and Venus Drying out a wet planet Sunday, September 9, 2012
Moon and Companions The stars foretell the weather Thursday, September 6, 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 The top of the king’s starry house Sunday, September 2, 2012
Seventh Month Miscounting the months Saturday, September 1, 2012
Dune Worlds Giant sand dunes on alien worlds Friday, August 31, 2012
Red Rivals Colorful rivals in the evening sky Wednesday, August 29, 2012
OSIRIS-Rex Studying a threatening space rock Sunday, August 26, 2012
Moon and Companions A traffic jam in the evening sky Tuesday, August 21, 2012
Eclipse Watcher Risking life and limb for a solar eclipse Sunday, August 19, 2012
Cloudy Skies A cruel twist of nature Saturday, August 18, 2012
Moon and Venus A close encounter in the dawn sky Sunday, August 12, 2012
Perseid Meteors The perfect spot for the Moon Saturday, August 11, 2012
Moon, Jupiter, and Aldebaran The Moon takes a pounding Friday, August 10, 2012
Mars, Saturn, and Spica A bright but rapidly closing triangle Wednesday, August 8, 2012
Alexandria A city — and a star — fit for a king Friday, July 20, 2012
Tuttle Comets War, embezzlement, and comets Tuesday, July 17, 2012
Swift Comets From hardware-store owner to cosmic celebrity Monday, July 16, 2012
Summer Delights Bright delights in the summer sky Sunday, July 15, 2012
More Moon and Companions A sky show that’s worth getting up for Saturday, July 14, 2012
Moon and Companions A gathering of astronomical superstars Friday, July 13, 2012
Venus and Aldebaran Bright and brighter in the dawn sky Friday, July 6, 2012
The Ecliptic Following the path of the Sun Sunday, July 1, 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
Leo Minor Stars without much flash Saturday, June 23, 2012
Venus and Jupiter An encore performance in the dawn sky Friday, June 22, 2012
Unproductive Sun Outshining the Sun — sort of Monday, June 18, 2012
Moon and Jupiter Swinging into the morning sky Saturday, June 16, 2012
Future Neighbor A future close neighbor to the Sun Thursday, June 14, 2012
Lunar Secrets New secrets from old moonrocks Tuesday, June 12, 2012
Back to the Moon(rocks) New discoveries from old rocks Monday, June 11, 2012
Johann Galle Taking note of a new planet Saturday, June 9, 2012
Solar Spotters Getting a better bead on the Sun Wednesday, June 6, 2012
Moon, Mars, and Regulus Dark ice at the Moon’s poles Monday, May 28, 2012
The Llama The sparkling eyes of the llama Saturday, May 26, 2012
Moon and Venus Sliding past the Moon and headed for the Sun Monday, May 21, 2012
Clockwork Eclipses Ticking off the hours until a solar eclipse Thursday, May 17, 2012
Luna See Firing a laser at the Moon Wednesday, May 9, 2012
Moon and Mars Crowded skies above the Moon Tuesday, May 1, 2012
Ranger 4 Slamming into the far side of the Moon Thursday, April 26, 2012
Vanishing Lights Ready for a stellar vanishing act Wednesday, April 25, 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
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
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
Venus and Pleiades The evening star and the littler dipper Sunday, April 1, 2012
Moon, Jupiter, and Venus A brilliant lineup in the evening sky Saturday, March 24, 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
Double Treat A double treat in the evening sky Wednesday, March 7, 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
Secret Mars Unlocking the secrets of the Red Planet Friday, March 2, 2012
Leap Day Leaping into the modern calendar Wednesday, February 29, 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
Friendship 7 Getting back in the Space Race Monday, February 20, 2012
Looking Deep Looking for storms before they’re born Monday, February 13, 2012
Geminga Giving birth to a “dead” star Sunday, February 12, 2012
White Dwarfs III Dead planets around dead stars? Friday, February 3, 2012
The Big Dog Biting into a bright constellation Sunday, January 29, 2012
Brightest Lights Cutting off a slice of the sky Saturday, January 21, 2012
Space Rocks II Studying pieces of other worlds Thursday, January 19, 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 Hyades Staring into the face of the bull Thursday, January 5, 2012
Quadrantid Meteors The children of a celestial break-up Tuesday, January 3, 2012
New Year’s Eve Sky A celestial greeting for the new year Saturday, December 31, 2011
Northern Cross Holding together a stellar cross Sunday, December 25, 2011
The Reindeer An extra reindeer for Santa’s sleigh Saturday, December 24, 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
Saturnalia A modern celebration with old customs Saturday, December 17, 2011
Race to the Pole Racing for the south pole Wednesday, December 14, 2011
Menkalinan The charioteer’s double-jointed shoulder Sunday, December 4, 2011
Fire and Water Fire and water in the night sky Saturday, December 3, 2011
Rarae Aves Rare birds in southern skies Monday, November 28, 2011
Orion Rising The return of an astronomical beauty Sunday, November 20, 2011
Mikhail Lomonosov The man who discovered an atmosphere Saturday, November 19, 2011
Moon and Companions Spacing out a morning lineup Thursday, November 17, 2011
Mercury and Venus Close neighbors in the evening sky Friday, November 11, 2011
Daylight Saving Time Stepping back in time Sunday, November 6, 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
Galileo at Gaspra A first encounter with a space rock Saturday, October 29, 2011
Fishy Constellations Fishing for constellations Sunday, October 23, 2011
Changing Time Just passing the time Tuesday, October 18, 2011
Comet Elenin A close encounter with comet dust Friday, October 14, 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
Harvest Moon Balancing the Harvest Moon Sunday, September 11, 2011
Glass Astronomy Astronomy-under-glass Tuesday, August 16, 2011
Star Travels A fanciful design for a starship Sunday, July 24, 2011
Celestial Equator An astronomical "Mason-Dixon Line" Sunday, June 19, 2011
Luis Alvarez Subatomic particles and dead dinosaurs Monday, June 13, 2011
Transit of 1761, Part IV A ring of fire around a planet Thursday, June 9, 2011
Transit of 1761, Part III Ducking cannonfire in the name of science Wednesday, June 8, 2011
Transit of 1761, Part II Dodging cannonfire in the name of science Tuesday, June 7, 2011
Transit of 1761 Spreading out to watch a little black dot Monday, June 6, 2011
More Moon and Venus A traffic jam in the dawn sky Saturday, April 30, 2011
Moon and Venus A close but far-away planet Friday, April 29, 2011
Space Day A double reason to celebrate Tuesday, April 12, 2011
Moon and Pleiades "Flashy" sisters in the evening sky Wednesday, April 6, 2011
April Springing into a beautiful month Friday, April 1, 2011
More Moon and Venus Naming ancient volcanic basins Wednesday, March 30, 2011
Moon and Venus Searching for an elusive moon Tuesday, March 29, 2011
Taking Inventory Taking inventory of the solar system Saturday, March 26, 2011
Mercury and Jupiter Big and small in the evening sky Monday, March 14, 2011
Shortest Year Birthdays by the basketful Sunday, March 13, 2011
Urbain Leverrier A "calculated" planetary discovery Friday, March 11, 2011
More Moon and Venus Nighttime objects in the daytime sky Monday, February 28, 2011
Moon and Venus A blazing-hot weather forecast Sunday, February 27, 2011
Mir Putting up a first building block Saturday, February 19, 2011
Lunar Guidance Following a guiding star Sunday, February 13, 2011
Interesting Planets Interesting worlds in other star systems Friday, February 11, 2011
Upsilon Andromedae An out-of-whack solar system Wednesday, February 9, 2011
Defining Planets An uncertain count of planets Tuesday, February 8, 2011
Moon and Jupiter A delayed trip to the Moon Sunday, February 6, 2011
More Apollo 14 Taking care of some lunar business Saturday, February 5, 2011
Apollo 14 Giving the Moon a big whack Friday, February 4, 2011
February Counting up the days of February Tuesday, February 1, 2011
Celestial Clock Ticking off the hours of the night Monday, January 31, 2011
Johannes Hevelius Filling in some gaps in the sky Saturday, January 29, 2011
Venus and Antares A deceptive morning duo Saturday, January 22, 2011
Moon and Regulus The stars turn across the night sky Friday, January 21, 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
Lunar Swirls Swirling across a drab surface Wednesday, January 12, 2011
Twilight Zone Entering the lunar twilight zone Tuesday, January 11, 2011
More Moon and Jupiter Diving into a famous lunar "sea" Monday, January 10, 2011
Quadrantid Meteors Tracers of a bygone constellation Sunday, January 2, 2011
Jupiter and Uranus Two giants passing in the night Saturday, January 1, 2011
New Year's Sky The dawn of a new year Friday, December 31, 2010
The Moon's Tail The tale of the Moon's tail Wednesday, December 29, 2010
Wet Moon Diving into a "wet" lunar surface Sunday, December 26, 2010
Holiday Skies Holiday lights in the night sky Saturday, December 25, 2010
The Sun Shines Stoking the fires of the Sun Wednesday, December 22, 2010
Shields Up! Protection against a dangerous universe Friday, December 17, 2010
Early Summer Flip-flopping the seasons Tuesday, December 14, 2010
Chippy Family Disrupting an icy world Friday, December 10, 2010
Orcus Giving birth to a distant moon Thursday, December 9, 2010
Eris Sowing discord in the outer solar system Wednesday, December 8, 2010
Distant Iceballs Clearing up some distant definitions Tuesday, December 7, 2010
Moon and Companions III The blazing "morning star" Thursday, December 2, 2010
Moon and Companions II Planning for a trip to hell Wednesday, December 1, 2010
Royal Society Getting together for science Sunday, November 28, 2010
A Star to Steer Her By A trip to Asia via the stars Monday, November 22, 2010
Close Targets Grabbing a lingering visitor Friday, November 19, 2010
Moon, Jupiter, and Meteors One night, two sky shows Tuesday, November 16, 2010
Moon and Jupiter A moonwalker goes back to work Monday, November 15, 2010
Moon and Companions Searching for cosmic fireflies Wednesday, November 3, 2010
Moon and Saturn Giant worlds everywhere you look Tuesday, November 2, 2010
Nedelin Catastrophe Rocketry's deadliest accident Sunday, October 24, 2010
Moon and Jupiter Saving four big moons Tuesday, October 19, 2010
Subrahmanyan Chandrasekhar Cruising toward the stars Monday, October 18, 2010
Moon and Companions Standing between a pair of rivals Sunday, October 10, 2010
Niels Bohr Follow the jumping electrons Thursday, October 7, 2010
Planet Names The unromantic names of distant planets Thursday, September 30, 2010
Moon and the Bull Kicking off a new Moon race Monday, September 27, 2010
Luna 16 Sampling the "dark" side of the Moon Friday, September 24, 2010
Life-Maker Forging the elements of life Friday, September 17, 2010
Living in Space III Keeping tidy on other worlds Thursday, September 16, 2010
Living in Space II A "second skin" for spacewalkers Wednesday, September 15, 2010
Living in Space The painful side of space travel Tuesday, September 14, 2010
Moon and Companions A beautiful but lopsided kite Friday, September 10, 2010
A Giant Leap Stepping out on a new world Tuesday, July 21, 2009

Featured Images

Ranger 7 images of the Moon, July 31, 1964
Success at Last Thursday, July 31, 2014
Artist's concept of Solar Orbiter
Feeling the Heat Friday, July 4, 2014
Three solar flares in early June 2014
Solar Fireworks Thursday, June 12, 2014
Venus, Mercury, and the earthshine-illuminated crescent Moon
Lighting the Shadows Friday, May 30, 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
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
Views from the 1964 World's Fair
Space Fair Tuesday, April 22, 2014
Artist's concept of a solar sail
Sailing Along Thursday, April 3, 2014
Mariner 10 at Mercury
First Encounter Saturday, March 29, 2014
Venus Express movie showing south polar vortex
Double Vortex Thursday, March 27, 2014
Lunar Reconnaissance Orbiter view on lunar north polar regions
Top o' the Moon Wednesday, March 19, 2014
China's Yutu rover on the Moon in an artist's concept
Lunar Returns Saturday, December 14, 2013
Superman's back story may have been inspired by an exploding star
Exploding Stars Saturday, December 14, 2013
Annie Jump Cannon
Astronomical Pioneer Tuesday, December 10, 2013
Female "computers" at Harvard College Observatory
Data Processing Center Monday, December 9, 2013
The life and times of William Herschel
Stellar Musician Thursday, November 14, 2013
Artist's concept of extrasolar planet Kepler 78b, an Earth-sized world
Hot Rock Thursday, October 31, 2013
Artist's concept of planet HAT-P7b
Hot Spot Friday, August 16, 2013
Eastern dawn sky, early August 2013
Morning Jam Friday, August 2, 2013
One of the first images from IRIS, a new Sun-watching satellite
First Sunlight Wednesday, July 31, 2013
Space-faring spider Arabella spins her first web in orbit, 1973
Spiders in Space Monday, July 29, 2013
Artist's concept of a blue exoplanet
Blue-Hot Planet Saturday, July 13, 2013
Planetary conjunction, May 2013
Evening Traffic Jam Saturday, May 25, 2013
Skylab in orbit
First Space Station Tuesday, May 14, 2013
The starry ceiling of Grand Central Terminal
Grand Sky Saturday, February 2, 2013
Soyuz spacecraft approaches space station with Moon in background
Ready for Arrival Monday, December 31, 2012
Artist's concept of the Sun's structure
Powerhouse Monday, December 17, 2012
Gravitational map of the Moon compiled by the GRAIL mission
Lunar Attraction Saturday, December 15, 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
Nighttime view of the southeastern U.S. from the International Space Station
Blue Night Monday, November 5, 2012
Moon, Jupiter, and Taurus, October 4-5, 2012
Bull Rush Thursday, October 4, 2012
Venus-Regulus encounter in the pre-dawn sky, October 2-4, 2012
Morning Mashup Monday, October 1, 2012
First-quarter Moon
Moonwatch Saturday, September 22, 2012
Andromeda and the Milky Way head for a galactic pile-up
Collision Course Wednesday, September 12, 2012
Artist's concept of the Gamma Cephei star system
Stellar Geometry Tuesday, September 4, 2012
About one hour after sunset, late August and early September
Red Rivals Wednesday, August 29, 2012
Neil Armstrong aboard the lunar module Eagle, July 21, 1969
Leading the Way Sunday, August 26, 2012
A flare on the surface of the star HD 189733 blasts away the atmosphere of an or
Zapped! Friday, June 29, 2012
Moon and Companions, June 2012
Moon and Company Monday, June 25, 2012
Apollo 17 at the rim of Shorty Crater, December 1972
Back to the Moon(rocks) Monday, June 11, 2012
An ultraviolet camera gazes skyward from the Moon during the Apollo 16 mission
Looking Up Monday, April 23, 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
Artist's concept of the Kepler-35 system, with a giant planet orbiting two stars
Seeing Double Wednesday, April 4, 2012
A powerful solar flare erupts on March 6, 2012
Stormy Skies Thursday, March 8, 2012
Mars is at opposition in early March 2012, shining brightest for the year
Mighty Mars Saturday, March 3, 2012
Voyager mission enhanced-color image of Jupiter's Great Red Spot
Planetary Impressionism Sunday, February 26, 2012
John Glenn enters his Mercury capsule (right), and launches on February 20, 1962
Up, Up, and Away! Monday, February 20, 2012
Dark lunar features are named seas or oceans
Split Personality Thursday, February 9, 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
M1, the Crab Nebula, in a Hubble Space Telescope image
Crab Nebula Friday, January 6, 2012
The Moon and Hyades, night of January 5, 2012
Staring at the Bull Thursday, January 5, 2012
Phoenix and Grus in the southern sky, late November evening
Rare Birds Monday, November 28, 2011
2011 image of the Apollo 12 landing site, from Lunar Reconnaissance Orbiter
Still Standing Friday, September 9, 2011
Yerkes Observatory in Wisconsin is home to the world's largest refractor
Still Going Thursday, August 18, 2011
Atlantis launches on the final space shuttle mission, July 8, 2011
Last Call Friday, July 8, 2011
Alan Shepard enters his capsule, then launches aboard Freedom 7, May 5, 1961
A-OK Flight Thursday, May 5, 2011
Moon and planets in the dawn sky, April 30/May 1, 2011
Dawn Encounter Friday, April 29, 2011
Launches of Vostok 1, STS-1 (space shuttle Columbia)
Double Date Tuesday, April 12, 2011
Streamers of dust partially obscure the "seven sisters," members of the Pleiades
Veiled Sisters Wednesday, April 6, 2011
Mercury and Jupiter passing in the evening sky
Just Passing By Sunday, March 13, 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
Apollo 14 commander Alan Shepard poses with the American flag on the Moon
Long Journey Sunday, February 6, 2011
Lunar crater gouged by Apollo 14 booster rocket
A Big Whack Friday, February 4, 2011
Earth is in the middle of the Sun's habitable zone
In the Zone Tuesday, January 18, 2011
The Sun as seen from space
Close to the Sun Monday, January 3, 2011
Western sky a couple of hours after sunset in late December
Happy Holidays! Saturday, December 25, 2010
Eruption of gas from the surface of the Sun
Sun Power Wednesday, December 22, 2010
Japanese spacecraft Akatsuki at Venus
Venusian Dawn Monday, December 6, 2010
China Clipper Sails the Pacific Ocean
Night Over Water Monday, November 22, 2010
Lunokhod image of its tracks on the lunar surface
Found It! Monday, November 15, 2010
Luna 16 diagram
To the Moon and Back Friday, September 24, 2010
MIT professor Dava Newman models a new type of space suit
Dressed for Success (in Space) Wednesday, September 15, 2010
Two planets and a star team up with the crescent Moon in the western evening sky
Moon and Companions Friday, September 10, 2010
Evaporating planet around the star HD209458
Puffy Planet Thursday, August 26, 2010
Western Lineup Sunday, June 27, 2010

FacebookTwitterYouTube

©2014 The University of Texas McDonald Observatory