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Caught: Cannonball pulsar escaping the Milky Way

It could travel from the Earth to the Moon in six minutes flat.

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Photograph aurorae

Simple tricks, great images.

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Kids Telescope Giveaway

Win a beginner telescope for ages 12+ from Thames & Kosmos and My Science Shop — a $159.99 value!

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Billboards in space?

Astronomers detest a Russian startup's advertising proposal.

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Astronomy for kids

Find out what it's like on other planets, learn how far away the stars are, or try a fun, space-themed project from our Astronomy for Kids page!
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Behind the Scenes

Lowell Observatory, U.S. Geological Survey, U.S. Naval Observatory, Meteor Crater.

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Phaethon

New look at a weird, blue rock.

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Take a trip you'll never forget!

With a range of exciting adventures to choose from, you're sure to find a trip that's perfect for you.  Explore trips now >>>
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Meet the frozen super-Earth around Barnard's star

Just six light-years from Earth, the second-closest star system to our Sun hosts a planet at least three times the mass of our own.

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50 years later: Apollo 8

Jim Lovell relives the first Moon trip.

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Martian stargazing

Dark, dusty skies.

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Discovering the dimmest galaxies

Astronomers see beyond the Milky Way’s glare into a hidden realm. Read more >>
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Sift through the debris of our solar system's formation

Explore our solar system's building blocks and find out everything you need to know about comets and asteroids in this free guide from Astronomy and Celestron. Get it here >>>
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Join us!

On December 5, 2020, join us as we set sail for 15 days aboard our privately chartered cruise ship. Learn more >>

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The Sky This Week

What's up in the night sky?

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Could humans live on a super-Earth?

What's the max gravity our bodies can survive?

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Join us!

Beneath Arizona's vast, clear skies you find some of most exciting astronomical destinations in the world. Learn more >>

Caught: Cannonball pulsar escaping the Milky Way

It could travel from the Earth to the Moon in six minutes flat.

Read more >>>
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