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Celebrating 50 years of Apollo

Join us as we look back at what made the Apollo program a defining moment of our history, and why it still resonates today. Explore now >>>

Heavy metal solar system

Merging neutron stars supplied much of the material that built our home. Read more >>>

Astronauts capture Apollo

Check out razor-sharp views of Earth and the cosmos.
Read more >>>

Cosmic conundrum

How fast is the universe expanding?

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Astronomy Exclusive!

Learn to identify 31 of the naturally occurring elements.

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Venus reimagined

A new analysis shows many of Venus' roughly 1,600 volcanoes are still active. Read more >>>

Twinsstandoff

NASA's Twins Study: New results

Spaceflight changes the human body, but only temporarily. Read more >>>

Win 6 exclusive flashcard sets!

Planetary tours

Your guide to the solar system.

Plan your hike >>>

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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 >>>
TitanIR

Titan's 4,000 mile band of ice

A surprise feature extends almost halfway around the moon.

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50 years later: Apollo 8

Jim Lovell relives the first Moon trip.

Read more >>>

Martian stargazing

Dark, dusty skies.

Watch now >>>

BlackHoleArtists

'It's a haunting thing'

Space artists discuss the first black hole image.

Read more >>
PrimeTimeforJupiter

Peak viewing time for Jupiter is coming

Get all the info 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 >>

Perfect for Kids

Get 200+ astronomy facts, activities, & fun for kids!

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Blue Moon lander

Jeff Bezos' Moon shot

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EarlyEarth

Where did Earth's water come from?

Looking beyond asteroids to find the origins of water

Read more >>>

Celebrating 50 years of Apollo

Join us as we look back at what made the Apollo program a defining moment of our history, and why it still resonates today. Explore now >>>

PICTURE OF THE DAYsee all »

Trailing the lake

The photographer captured and stacked eighty 10-second exposures at the South Tufa Area of Mono Lake in California. At the time of the image, the landscape was illuminated by light from a crescent Moon.
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