Astronomy Picture of the Day

Apollo 11: Catching Some Sun


Bright sunlight glints and long dark shadows mark this image of the lunar surface. It was taken July 20, 1969 by Apollo 11 astronaut Neil ...

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Phobos: Moon over Mars


A tiny moon with a scary name, Phobos emerges from behind the Red Planet in this timelapse sequence from the Earth-orbiting Hubble Space ...

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IC 1396: Emission Nebula in Cepheus


Stunning emission nebula IC 1396 mixes glowing cosmic gas and dark dust clouds in the high and far off constellation of Cepheus. Energized by the ...

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Ireson Hill on Mars


What created this unusual hill on Mars? Its history has become a topic of research, but its shape and two-tone structure makes it one of the more ...

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Thunder Moon over Pisa


What's wrong with this picture? If you figure it out, you may then realize where the image was taken. The oddity lies actually in one of the ...

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Moon Shadow versus Sun Reflection


What are those lights and shadows crossing the Earth? As the featured five-second time-lapse video progresses, a full day on planet Earth is ...

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Lightning Eclipse from the Planet of the Goats


Thunderstorms almost spoiled this view of the spectacular 2011 June 15 total lunar eclipse. Instead, storm clouds parted for 10 minutes during the ...

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Close-up of The Great Red Spot


On July 11, the Juno spacecraft once again swung near to Jupiter's turbulent cloud tops in its looping 53 day orbit around the Solar System's ...

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NGC 4449: Close-up of a Small Galaxy


(xxxedit and linkxxx) Grand spiral galaxies often seem to get all the glory. Their young, blue star clusters and pink star forming regions along ...

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Full Moon and Boston Light


This well-planned telephoto timelapse captures July's Full Moon rise across outer Boston Harbor, Massachusetts, planet Earth. In the foreground, ...

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