Astronomers have uncovered new evidence that Jupiter’s moon Callisto likely harbors a massive underground ocean, potentially joining Europa and Ganymede as another water-rich world in the outer solar ...

As well as some of the darkest skies on the U.S. East Coast, it's also the nation's southernmost point. At 24.5 degrees north ...

NASA's Europa Clipper Sails Toward Ocean Moon of Jupiter Oct. 14 ... an asteroid hit the Jupiter moon Ganymede. Now, a researcher realized that the Solar System's biggest moon's axis has shifted ...

March's full moon, known as the Worm Moon, will bring a stunning total lunar eclipse, turning the Moon a deep reddish hue in ...

Canopus' shine shimmered over the ocean like a path was being laid from ... for planets — and shows us the shadow of Jupiter's moon Ganymede crossing the clouds of the giant planet.

Astronomers have successfully captured Neptune's auroras for the first time, utilizing the combined capabilities of the James ...

For instance, last year, the European Space Agency's Jupiter Icy Moon Explorer (JUICE) — which will also be exploring Europa, in addition to its larger cousins Ganymede and Callisto ...

Ganymede is the largest moon in the Solar System ... It is currently believed that we could find a water ocean beneath Callisto’s heavily cratered, icy, rocky surface. Europa is covered by ...