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Rover arrival

Curiosity has arrived at Mars' Mount Sharp, the rover's long-term prime destination

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Surface-shifting activity

Scientists have found evidence of plate tectonics on Europa

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Join Astronomy's Aurora Adventure

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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Home sweet home

Meet our Milky Way's newly identified ginormous supercluster of galaxies

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Uwingu Mars

Name a crater ... make an impact!

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Astronomy is available in the app store!

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Solar safety

How to Safely Observe the Sun

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Construction site

A glimpse of the earliest stages of massive galaxy development

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Explore Astronomy magazine on DVD!

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Prepare for landing

Rosetta scientists narrow down locations for comet lander

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Starmus 2014 Rocks Astronomy!

Join astronomy’s greatest minds in the Canary Islands, September 22–27, 2014. New speakers continue to be announced!

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Moon map

The best-ever global color map of Neptune's strange moon Triton

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Rover arrival

Curiosity has arrived at Mars' Mount Sharp, the rover's long-term prime destination

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PICTURE OF THE DAYsee all »

Mercury and the Moon

This beautiful image shows the crescent Moon near our solar system’s innermost planet, Mercury, which is the bright dot at upper left. A close look will reveal earthshine, light reflected off Earth to the Moon, slightly lighting up our satellite’s dark region. (Canon Powershot G12 point-and-shoot digital camera, 15.7 mm focal length [72mm at 35mm format equivalent], f/4.5, ISO 160, 1/8-second exposure taken January 31, 2014, at 6:05 p.m. CST, from Mobile Bay, Alabama)
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