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High-energy Sun

The NuSTAR space telescope has produced the most sensitive solar portrait ever taken in high-energy X-rays

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Sky Guide 2015

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

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Phase two

Kepler has found its first exoplanet as part of its new K2 mission

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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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Mission complete

Venus Express has ended its eight-year mission

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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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Martian methane

Curiosity has found active and ancient organic chemistry on Mars

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Uwingu Mars

Name a crater ... make an impact!

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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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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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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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Wet Red Planet

Curiosity rover finds clues to how water helped shape martian landscape

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High-energy Sun

The NuSTAR space telescope has produced the most sensitive solar portrait ever taken in high-energy X-rays

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PICTURE OF THE DAYsee all »

A giant squid and a flying bat

The blue “giant squid” in this image is probably a reflection nebula, although some astronomers think it may be a planetary nebula, the remnant of a dead Sun-like star. Astronomers have designated it Ou 4, after its discoverer, French astroimager Nicolas Outters. The red “giant bat” that surrounds it is emission nebula Sharpless 2–129. Both lie in the northern constellation Cepheus the King. (8-inch Officina Stellare Veloce RH200 Riccardi-Honders astrograph at f/3, SBIG ST-8300M CCD camera, 14 hours and 15 minutes total exposure, of which 5 hours and 20 minutes were through an Oxygen-III filter)
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