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Martian methane

NASA's Curiosity rover has found active and ancient organic chemistry on the Red Planet

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Get started in the hobby!

Find your way around the night sky with our app!

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Water report

What kind of water vapor has Rosetta found on Comet 67P?

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Asteroid Day

June 30, 2015: A day to learn about asteroids and what we can do to protect our planet, ourselves, and future generations

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2015 Calendar

View stunning images of stars, galaxies, and deep space wonders.

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Wet Red Planet

Curiosity rover finds clues to how water helped shape martian landscape

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Join Astronomy's Aurora Adventure

Experience a once-in-a-lifetime northern lights tour with Astronomy magazine and TravelQuest International

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Sky Guide 2015

Monthly observing guide to the planets, meteor showers, and more

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Hello New Horizons

The spacecraft has come out of hibernation for its 2015 Pluto flyby

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Indonesian Islands Eclipse

Explore Bali and witness a total solar eclipse in March 2016 with Astronomy magazine and TravelQuest International

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Take the universe with you!

Spacecraft success

NASA’s new Orion spacecraft completes first spaceflight test

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Get Started Tonight!

Sign up for Astronomy's five-part email series, Observing Essentials, and start making the most of every minute under the stars!

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Atmosphere obliterated

Many small impacts likely erased much of Earth’s early atmosphere

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Uwingu Mars

Name a crater ... make an impact!

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Martian methane

NASA's Curiosity rover has found active and ancient organic chemistry on the Red Planet

Learn more »

PICTURE OF THE DAYsee all »

A December shooting star

This shot of a Geminid meteor clearly shows the colors the tiny bit of rock created as it vaporized in Earth’s upper atmosphere. In 2014, this meteor shower peaked on the night of December 14 and the morning of the 15th. (Canon 6D DSLR, Canon EF 24–105mm f/4L IS USM lens set at 24mm and f/4, ISO 3200, 10-second exposure, taken December 15, 2014, from Warrenton, Virginia)
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