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Grades 3-5 (Ages 8-10)


Mercury March 7, 2016

Jupiter's Moons February 19, 2016


Asteroids February 19, 2016

Pluto February 19, 2016


Neptune February 10, 2016


Uranus February 10, 2016


Mars February 10, 2016

Mars meteorite

Meteorites May 19, 2010

Equipment Tips May 14, 2010

What to Look For May 14, 2010

Become a Stargazer April 14, 2010

Radio Programs

Moon and Mars A neighbor world gets brighter February 28, 2016

The Whole Gang The worlds of the solar system February 1, 2016

Moon and Jupiter A big moon takes a beating January 26, 2016

Moon and Mars Lighting up the waning Moon — after this. January 2, 2016

New Year’s Sky A grand view for a new year December 31, 2015

Christmas Moon Lighting up the night December 25, 2015

Long-Night Moon Rudolph gets the night off December 24, 2015

New Pluto A new view of a distant world December 22, 2015

Moon and Companions Bright companions for the Moon December 5, 2015

Moon and Mars A frozen treat on the Red Planet December 4, 2015

Halloween Haunting stars in the evening sky October 31, 2015

Hunter’s Moon Marking time with the Hunter’s Moon October 25, 2015

Close Visitors Keeping an eye out for trouble October 16, 2015

Mars and Jupiter A close call in the morning sky October 14, 2015

Uranus at Opposition A good showing for “George’s Star” October 10, 2015

Morning Mercury A dark planet in the dawn sky October 9, 2015

Moon and More Companions Filling up a Martian crater October 7, 2015

Weekend Goodies A great weekend for skywatching September 24, 2015

Morning Lineup Bright lights in the dawn sky September 23, 2015

North vs. South Different views of the night sky September 19, 2015

John Dobson Bringing telescopes to the masses September 13, 2015

Moon, Venus, and Mars Ancient Mars cools off September 8, 2015

Zenith Looking straight up September 6, 2015

First Professor Ready for the first day of class September 1, 2015

Venus and Mars Prominent neighbors in the dawn sky August 31, 2015

Neptune at Opposition II Cranking up the winds on a distant planet August 30, 2015

Neptune at Opposition Neptune in the sky with diamonds August 29, 2015

Shergotty A piece of Mars falls from the sky August 24, 2015

Iron Rain Showering Earth with iron raindrops August 17, 2015

Moon and Uranus Pointing out a neglected giant August 3, 2015

Blue Moon Modern folklore about the night sky July 29, 2015

More Charles Townes Shining a new light on the universe July 28, 2015

Charles Townes Dreaming up a laser beam July 27, 2015

Moon and Companions Getting ready to change addresses July 17, 2015

Pluto A famous but poorly understood world July 6, 2015

Fireworks Fireworks in the evening sky July 3, 2015

Venus and Jupiter Identifying two evening skylights July 1, 2015

Short Moon A short night of moonwatching June 30, 2015

Bright Trios A pair of trios in the evening sky June 28, 2015

Venus and Jupiter Bright planets in the evening sky June 25, 2015

More Fred Hoyle Scientist, writer, contrarian June 24, 2015

Fred Hoyle Unlocking the secrets of the stars June 23, 2015

Moon and Jupiter Plunging into a hidden ocean June 19, 2015

Martian Spring Wild seasons on the Red Planet June 17, 2015

Oceans Gained Filling up Earth’s oceans June 4, 2015

Ocean Lost A massive ocean on the planet Mars June 3, 2015

Moon and Companions Bright lights in the evening sky May 21, 2015

Moon and Saturn Optical illusions in the night sky May 3, 2015

Rock Fight Fighting over a rock from space May 1, 2015

Moon and Spica Creeping up on a bright star April 30, 2015

Evening Mercury Measuring a planetary day April 25, 2015

Meteorites III Picking up some unusual rocks April 18, 2015

Meteorites II Measuring the age of the solar system April 17, 2015

Meteorites Rare treasures from beyond Earth April 16, 2015

Moon and Jupiter Dipping into a giant hot tub March 28, 2015

Moon in the Middle Passing through a bright triangle March 27, 2015

Moon and Mars Warming up a cold planet March 20, 2015

Moon and Jupiter Adding color to a giant planet March 1, 2015

Double Double A double double in the evening sky February 20, 2015

Celestial Equator Splitting the night sky in half January 30, 2015

Moon and Mars Asteroids take aim at Mars January 21, 2015

Venus and Mercury Pointing the way to a little planet January 9, 2015

Featured Images

Radio view of asteroid 2015 TB145, which will pass close to Earth on Halloween

Boo! October 31, 2015

Backlit view of Pluto landscape from New Horizons

Hazy Skies September 22, 2015

Comet Crawl September 14, 2015

New Horizons view of young mountains on Pluto

Ice Mountains July 15, 2015

July 12 views of Charon and Pluto from New Horizons

Hours Away July 13, 2015

First Eyes on Mars July 13, 2015

New Horizons view of Pluto and Charon, July 1, 2015

Best Shot July 7, 2015

Encounter between Venus and Jupiter, July 2015

Planetary Headlights July 2, 2015

Views of the Venus-Jupiter evening encounter, June 26-July 4, 2015

Brilliant Encounter June 26, 2015

A mosaic of spacecraft images shows the varied surface of Ganymede

Hiding an Ocean June 20, 2015

Sunset at Gale Crater, Mars, April 2015

Blue Skies May 14, 2015

Artist's concept of Earth's distant future

Bright Future April 29, 2015

View of Loki Patera, a lake of molten rock on Io, a moon of Jupiter

Hot Lake March 29, 2015

Curiosity rover view of rock layers inside Gale Crater on Mars

Ancient Lakebed December 9, 2014

Hubble Space Telescope view of Uranus

Tilted Giant October 6, 2014

India's Mars Orbiter Mission

On Target Again September 24, 2014

Artist's concept of MAVEN orbiting MARS

On Target September 20, 2014

Voyager 1 view of Jupiter's Great Red Spot

Long-Lasting Storm August 18, 2014

Hubble Space Telescope view of Jupiter, Ganymede

Layer-Cake Moon August 15, 2014

Europa orbiter mission concept

Fresh Idea July 3, 2014

Hubble views of Jupiter's Great Red Spot

Shrinking Storm May 15, 2014

Views from the 1964 World's Fair

Space Fair April 22, 2014

Artist's concept of early morning fog, clouds, and frost on Mars

Morning Fog April 8, 2014

Superman's back story may have been inspired by an exploding star

Exploding Stars December 14, 2013

Annie Jump Cannon

Astronomical Pioneer December 10, 2013

Female "computers" at Harvard College Observatory

Data Processing Center December 9, 2013

Launch of MAVEN spacecraft to Mars

On Its Way November 18, 2013

Almost Ready November 18, 2013

Artist's concept of MAVEN Mars orbiter

Mars Maven November 17, 2013

Hubble Space Telescope view of planet Uranus

Blue-Green Giant October 1, 2013

Composite Galileo image of Jupiter's volcanic moon Io

Jovian Adventure August 30, 2013

Eastern dawn sky, early August 2013

Morning Jam August 2, 2013

Kasei Valles, an ancient flood channel on Mars

Ancient Flood June 10, 2013

Planetary conjunction, May 2013

Evening Traffic Jam May 25, 2013

Supercomputer simulations of Earth's magnetic field

Twist and Flip April 8, 2013

The starry ceiling of Grand Central Terminal

Grand Sky February 2, 2013

Moon, Jupiter, and Taurus, October 4-5, 2012

Bull Rush October 4, 2012

Venus-Regulus encounter in the pre-dawn sky, October 2-4, 2012

Morning Mashup October 1, 2012

Recent image from Mars rovers Curiosity and Opportunity

Mars Targets September 29, 2012

First-quarter Moon

Moonwatch September 22, 2012

About one hour after sunset, late August and early September

Red Rivals August 29, 2012

Neil Armstrong aboard the lunar module Eagle, July 21, 1969

Leading the Way August 26, 2012

View of the asteroid Vesta from the Dawn spacecraft

Ready for Departure August 23, 2012

Solar eclipse of August 19, 1887, from near Berlin

Fire in the Sky August 18, 2012

Moon and Companions, June 2012

Moon and Company June 25, 2012

An ultraviolet camera gazes skyward from the Moon during the Apollo 16 mission

Looking Up April 23, 2012

Water geysers from the south pole of Enceladus, a moon of Saturn

Leaking Moon March 26, 2012

Venus and Jupiter pass each other in the evening sky, March 10-14, 2012

Celestial Headlights March 10, 2012

Mars is at opposition in early March 2012, shining brightest for the year

Mighty Mars March 3, 2012

John Glenn enters his Mercury capsule (right), and launches on February 20, 1962

Up, Up, and Away! February 20, 2012

M1, the Crab Nebula, in a Hubble Space Telescope image

Crab Nebula January 6, 2012

The Moon and Hyades, night of January 5, 2012

Staring at the Bull January 5, 2012

Jupiter's Great Red Spot and the planet's four largest moons

An Eyeful of Moons January 2, 2012

Galileo spacecraft mosaic of Ganymede, largest moon of Jupiter

Two-Toned Moon December 5, 2011

Phoenix and Grus in the southern sky, late November evening

Rare Birds November 28, 2011

The giant volcano Pele erupts on Jupiter's moon Io

Fire Mountain October 13, 2011

Craters fill an ancient river channel on Mars

Martian Rapids October 10, 2011

Messenger view of Mercury's southern hemisphere

Hard-to-Study Planet September 2, 2011

Moon, Mars, and Aldebaran, July 26-28, 2011

Seeing Orange July 25, 2011

Delta Lyrae and the Summer Triangle

Seeing Double July 10, 2011

Moon and planets in the dawn sky, April 30/May 1, 2011

Dawn Encounter April 29, 2011

Image of water distribution in northern hemisphere of Mars

Watery Mars April 14, 2011

MESSENGER's first color image of Mercury, March 29, 2011

First Glimpse March 31, 2011

Mercury and Jupiter passing in the evening sky

Just Passing By March 13, 2011

Apollo 14 commander Alan Shepard poses with the American flag on the Moon

Long Journey February 6, 2011

Western sky a couple of hours after sunset in late December

Happy Holidays! December 25, 2010

Two planets and a star team up with the crescent Moon in the western evening sky

Moon and Companions September 10, 2010

A thick dust storm blows across Mars in this image from Mars orbit.

Dusty Skies July 12, 2010

Western Lineup June 27, 2010

Rings and Moons

Rings and Moons June 4, 2010

Big Blue Planet

Big Blue Planet June 1, 2010