Ganymede, a behemoth of an icy moon in Jupiter's orbit, was captured in vivid detail by NASA's Juno spacecraft on June 7. It was the closest flyby of the moon ever. Photos shared by NASA Tuesday ...

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 ...

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.

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.

An ancient impact Ganymede has long intrigued Hirata, who said he believes uncovering its evolution is “meaningful.” The moon’s surface is a study in contrasts, with bright regions of ridges ...

Ganymede likely has some special characteristics. It isn’t just Jupiter’s biggest moon, but the biggest in the entire solar system by far—about the size of Mercury and our moon combined.It ...

With a diameter of 3,273 miles/5,268 kilometers, Ganymede is the largest moon and the ninth-largest object in the solar system, bigger than the planet Mercury and dwarf planet Pluto.

Ganymede is a fascinating moon that's almost a planet. We know that it probably formed from left-over material in Jupiter's sub-nebula, but that was billions of years ago.

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.