Mercury is a mystery. It’s the smallest planet in our solar system, the closest to the Sun, and one of the most extreme. Its ...

New research suggests that Mercury's crust is shifting and twisting in unexpected ways thanks to the force of the Sun.

Four prominent celestial objects — the moon, a bright planet and two bright stars — will come together to form a "celestial ...

Everything in space—from Earth and the sun to black holes—accounts for just 15% of all matter in the universe. The rest of ...

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Everything in space - from the Earth and Sun to black holes - accounts for just 15% of all matter in the universe . The rest of the cosmos seems to ...

The camera, now bolted to the end of a giant telescope at the Rubin Observatory, is expected to shoot photos of 20 billion ...

This portrait from the NASA/ESA Hubble Space Telescope puts the nearby galaxy NGC 4449 in the spotlight. The galaxy is ...

NASA released a nicely produced documentary about the James Webb Space Telescope called "Cosmic Dawn: the Untold Story of the ...

Summer arrives for northern observers as the Moon visits Venus, Uranus, and Mercury. Plus: globular cluster M15, double star ...

After 30 years, Hubble is still revealing new mysteries of the universe. Operating far past its expected life span, the telescope captures data that answer some of space’s biggest questions ...