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Cosmos

Learn about our place in the universe.

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STARMUS VI: 50 years on Mars

In September 2021, Armenia will showcase the world’s great scientific minds and rock star talent in celebration of Mars exploration.  Learn more >>>
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Comet NEOWISE springs a naked-eye surprise

Comet C/2020 F3 (NEOWISE) has joined the party.  View our Comet NEOWISE photo gallery >>>

Star Atlas

87,000 stars, 1,200 deep-sky objects and 24 high-quality star maps.

Inside star cities

Watch editor David J. Eicher introduce his latest book on galaxies, or order now!

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NASA's Perseverance rover prepares for launch

Equipped with a rock-blasting laser, two microphones, 23 cameras, and even a helicopter, the rover is set to head to the Red Planet.  Read more >>>

"Mars Underground"

How a group of students sparked a return to the Red Planet. 

Read more >>>

Martian stargazing

Dark, dusty skies.

Watch now >>>

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The hunt for dangerous asteroids continues

More than 100 of Earth's best telescopes have closed due to COVID-19. But key asteroid detection efforts remain online. Read more >>>
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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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The Degenerate Era

When the last stars die, the cosmos will turn into a drab place, with smoldering stellar remnants fading from sight like cooling embers.

Read more >>>

SpaceX loses first Starship prototype

The company will move forward with other prototypes.  Read more >>>

Moon Village:

Humanity's first step toward a lunar colony?
Read more >>>
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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 >>

Sunfilaments

Zooming in on the Sun

New ultra-high-resolution images reveal previously invisible filaments of million-degree plasma threaded through the Sun's atmosphere.  Read more >>>

Astronomy Exclusive

Learn about 36 astronauts who have had a large impact on our history.

Disappearing Moon

Without our satellite, the planet would wobble, dramatically affecting seasons and climate.

Read More >>>

BlackHoleArtists

'It's a haunting thing'

Space artists discuss the first black hole image.

Read more >>

STARMUS VI: 50 years on Mars

In September 2021, Armenia will showcase the world’s great scientific minds and rock star talent in celebration of Mars exploration.  Learn more >>>

PICTURE OF THE DAYsee all »

Note to gamers

The Pacman Nebula (NGC 281) is an emission nebula in the constellation Cassiopeia the Queen. American astronomer Edward Emerson Barnard discovered this object in 1883. It lies 9,500 light-years away.
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