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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 >>>

Comet NEOWISE springs a naked-eye surprise

Comet C/2023 F3 (NEOWISE) has joined the party. View our Comet NEOWISE photo gallery >>>

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

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Inside star cities

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

NASA's Perseverance rover prepares for launch

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"Mars Underground"

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

Martian stargazing

Dark, dusty skies.

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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 >>>

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 >>>

The Degenerate Era

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

SpaceX loses first Starship prototype

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

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Humanity's first step toward a lunar colony?

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Join us!

On December 5, 2023, join us as we set sail for 15 days aboard our privately chartered cruise ship. Learn more >>

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 >>>

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Journey inside the birthplace of stars.

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Disappearing Moon

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

'It's a haunting thing'

Space artists discuss the first black hole image.

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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The Big Dipper at right seems to stand on its handle while the two stars at the end of the bowl, called the Pointers, lead to the North Star, Polaris, the brightest star in the constellation Ursa Minor the Bear Cub. At the left edge, the W figure of Cassiopeia the Queen is setting.