Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there.

On Jan. 13, bright Mars will disappear behind the full moon for several hours. It's the only lunar occultation of Mars ...

With 10 instruments and technology tests, Firefly Aerospace's Blue Ghost lander is part of NASA's Commercial Lunar Payload ...

Firefly Aerospace will team up with NASA to explore the lunar surface's Gruithuisen Domes, using sophisticated instruments ...

Venus is particularly bright in the night sky this month, outshining even Sirius, the brightest star. For observers at ...

Research and development is underway to create robots that can hunt for signs of life in the vast oceans that exist under the ...

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