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Ancient worlds

Astronomers have discovered a star that’s 11.2 billion years old and has at least five Earth-sized planets

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Sign up for bonus web features and get a free gift!

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Asteroid surprise

The asteroid that flew past Earth has a small moon in tow

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New podcast series!

Editor David J. Eicher conducts extensive interviews with the world's top astrophysicists, planetary scientists, and cosmologists

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Complex comet

Rosetta reveals 67P has varied surface features and processes

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Uwingu Mars

Name a crater ... make an impact!

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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!

Year of Light

Chandra celebrates observing across multiple wavelengths

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Sign Up for Astronomy's five-part Observing Essentials email series!

Tucson Public Star Party

Join the skywatching festivities February 14!

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Signal clues

Are two supermassive black holes in the final phases of a merger?

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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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Out-of-this-world Award

Your 2014 outreach efforts could earn your astronomy club $2,500!

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Gas gorging

NuSTAR has pinpointed the true monster of a galactic mashup

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Ancient worlds

Astronomers have discovered a star that’s 11.2 billion years old and has at least five Earth-sized planets

Learn more »

PICTURE OF THE DAYsee all »

Hind’s Variable Nebula

Hind’s Variable Nebula (NGC 1555) is a reflection nebula famous for its brightness changes. The variable star that illuminates it (and the reason for the variances) is T Tauri. (4-inch Takahashi FSQ-106EDX refractor at f/5, Quantum Scientific Instruments QSI 683wsg CCD camera, LRGB image with 27 hours of exposure time)
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