Astronomy Picture of the Day

Apollo 11: Catching Some Sun

2017-07-22

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

2017-07-21

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

2017-07-20

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

2017-07-19

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

2017-07-18

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

2017-07-17

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

2017-07-16

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

2017-07-15

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

2017-07-14

(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

2017-07-13

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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