New simulations show that Jupiter's massive moon Ganymede was knocked off its axis when it was struck by a roughly ...

Ganymede is the seventh moon and third Galilean satellite outward from Jupiter, orbiting at about 665,000 miles (1,070 million kilometers). It takes Ganymede about seven Earth days to orbit ...

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, ...

Astronomers find 12 new moons orbiting Jupiter 00:33. NASA has detected water vapor for the very first time in the atmosphere of Ganymede — not only Jupiter's largest moon, but the largest moon ...

Flybys of Jupiter and its moon Ganymede conducted by the NASA Juno mission have revealed new Van Gogh-like images of the gas giant, as well as the sounds made by one of its moons.

NASA's Voyager 2 spacecraft snapped this color image of Jupiter's moon Ganymede, the largest satellite in the solar system, on July 7, 1979 from a distance of 745,000 miles (1.2 million kilometers).

The European Space Agency’s $1.7 billion Jupiter Icy Moons Explorer (JUICE) spacecraft blasted-off in April ultimately to go into orbit around Ganymede for nine months from late 2034.

Ganymede and Jupiter are in a complicated relationship, and some of that relationship extends to Ganymede's surface chemistry, where Jupiter's plasma strikes the moon's poles and irradiates the ice.

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.

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.

Of course, there’s still a lot we don’t know about planets like Jupiter and its moon, Ganymede. In fact, the closest we’ve come to the Ganymede itself is 645 miles.

Space crash: New research suggests huge asteroid shifted Jupiter's moon Ganymede on its axis An asteroid 20 times larger than the one that struck Earth and led to the extinction of the dinosaurs ...