A study has cast doubt on the idea that Jupiter's moon Europa, where NASA has sent a spacecraft, could have conditions to ...

On July 6, 1938, an American astronomer named Seth Barnes Nicholson discovered Jupiter's moon Lysithea. Nicholson spotted Lysithea from Mount Wilson Observatory in California, where he had previously ...

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Trapped in a gravitational push and pull between Jupiter and other Jovian moons, Io is constantly being stretched and compressed. Heat generated by these contortions has melted pockets of the moon's ...

Eupheme was discovered in 2003 by Scott S. Sheppard's team at the University of Hawaiʻi using data from Mauna Kea ...

A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...