This kind of event, known as true polar wander, is rare—and impressive. Ganymede, like Earth’s moon, is tidally locked, which ...

A colossal asteroid, estimated to be 20 times larger than the one that led to the extinction of the dinosaurs on Earth, has left a permanent mark on Jupiter’s largest moon, Ganymede. This ...

Who would've guessed that Ganymede, one of Jupiter's many moons ... like this an opportunity to glean a better understanding Earth's oceans. "When I saw the richness of the turbulence around ...

which can be determined to a high degree of accuracy from its motion away from or toward Earth and measured by examining radio communications. The temporal deformation of Ganymede's surface by Jupiter ...