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Water work

Much of our solar system’s water likely originated as ices that formed in interstellar space

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Orbiter arrival

MAVEN has entered orbit around the Red Planet

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Experience a once-in-a-lifetime northern lights tour along the Norwegian coast and interior with Astronomy magazine and TravelQuest International.

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Small but supermassive?

Smallest known galaxy with a supermassive black hole found

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Uwingu Mars

Name a crater ... make an impact!

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A Space Experience

Win a trip for four to the Kennedy Space Center Visitor Complex

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Solar safety

How to Safely Observe the Sun

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Back to space

NASA chooses Boeing and SpaceX to transport astronauts to the ISS

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Astronomy on DVD

Explore Astronomy magazine on DVD!

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Location locked

Rosetta scientists pick location for comet lander

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Rover arrival

Curiosity has arrived at Mars' Mount Sharp, the rover's primary destination

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Water work

Much of our solar system’s water likely originated as ices that formed in interstellar space

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PICTURE OF THE DAYsee all »

The green flash

The photographer captured this gorgeous image of the enigmatic green flash while he was at Solana Beach, California. Atmospheric refraction of the top of the Sun’s disk sometimes creates a vivid green flash if the observer’s horizon is low enough and distant enough. (Canon EOS Rebel T3i DSLR, Canon EF75-300mm f/4-5.6 lens set at f/5.6 and 300mm, ISO 400, single-frame 1/4,000-second exposure acquired in video mode and clipped from the sequence)
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