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Distant discovery

ALMA and VLT probe surprisingly dusty and evolved galaxy in the early universe

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Time Travel

Could you Really Travel Through a Black Hole?

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Almost there

Dawn will enter orbit around Ceres this Friday

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How Hubble Changed the Cosmos

We celebrate the 25th anniversary of this special space telescope with exclusive interviews, extensive graphics, and much more

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Far-away find

Ancient super-bright quasar with massive black hole discovered

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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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Get an Instant Gift!

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

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In the wind

Telescopes give shape to furious black hole winds

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

NEW EPISODE!

Garik Israelian: From Stars to the Starmus Festival

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Starburst solutions

Why do some galaxies "burst" with star formation while others do not?

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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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Take the Universe with you!

Triple formation

A multiple-star system in the beginning stages of formation

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Distant discovery

ALMA and VLT probe surprisingly dusty and evolved galaxy in the early universe

Learn more »

PICTURE OF THE DAYsee all »

The Vela supernova remnant

The Vela supernova remnant is the result of an exploding star whose light reached Earth around 11,000 years ago. As the gas continues to expand into space, it interacts with material there and gives off radiation we can record. (8-inch Riccardi-Honders telescope at f/3, SBIG STL-11000M CCD camera, Hydrogen-alpha/Oxygen-III/Sulfur-II image with 11 hours and 40 minutes of exposures, stacked)
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