Ganymede is Jupiter's largest moon and is also the largest moon in the entire solar system. It is bigger than both Mercury and dwarf planet Pluto and only slightly smaller than Mars. The moon ...

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. Hubble ...

Discovered by Galileo in 1610 while he was messing about with his new telescope, Ganymede is not only the largest moon of the planet Jupiter, but the largest in the solar system. In fact ...

Jupter’s frozen moon Europa and a couple of Saturn’s satellites have gotten lots of love from space probes dispatched by curious Earthlings. Now it’s Ganymede’s turn. Ganymede is ...

The result shows that pancake electrons come from electrons trapped around Ganymede, confirming the existence of radiation belts around the icy moon! After a few orbits of Ganymede, particles from ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Jupiter’s moon ...

NASA’s Juno spacecraft at Jupiter this week got to within 645 miles/1,000 kilometers of Ganymede, the Solar System’s largest moon. The spacecraft’s JunoCam imaging system had just 25 minutes ...

Ganymede is one of the most complex of Jupiter’s nearly 100 moons—and indeed, one of the most intriguing worlds in the entire solar system. It is the only known moon with its own magnetic ...

The solar system's largest moon, Ganymede, which orbits the largest planet, Jupiter, was hit by an asteroid four billion years ago that shifted the gas giant's satellite on its axis, new research ...