While Ganymede hasn’t yet been observed spewing plumes of water vapor like Saturn’s moon Enceladus, Jupiter’s largest moon is most likely hiding an enormous saltwater ocean.

A new study revealed that a massive asteroid may have hit Jupiter’s moon Ganymede about 4 billion years ago, shifting the moon on its axis.

Two icy moons of Jupiter, though neighboring and of similar size, exhibit radically different internal structures. A new study suggests this dichotomy stems from their very formation, ...

Ganymede is a particularly weird place. Not only is it Jupiter’s most massive satellite, it’s the biggest moon in the whole solar system.

An artist's impression of ESA's Jupiter Icy Moons Explorer -- JUICE - in orbit around giant planet, flying past its largest moons (left to right): Ganymede, volcanic Io, Jupiter (with auroral ...

Ganymede, which is 50% larger than our own moon, has an ocean beneath its icy surface – up to 60 miles deep – and is suspected of being able to support primitive life.

Ganymede is also the only moon in the Solar System with a magnetic field—a bubble-shaped region of charged particles. Scientists have spotted aurorae—as ribbons of glowing, ...

But, creative as they may have been, none of these experiments satisfied me. I had been drawn in by the poetic force of Ganymede’s situation, the romanticism of a few striking images—as a result, I ...

Ganymede is an enormous moon, larger than any other we’ve found, including our own, and may one day be the centerpiece of wider human settlements around Jupiter. Greenland lawmakers form a new ...

A new study revealed that a massive asteroid may have hit Jupiter’s moon Ganymede about 4 billion years ago, shifting the moon on its axis.