A colossal asteroid slammed into Jupiter's largest moon Ganymede with so much power it dramatically and permanently ...

While orbiting Jupiter, it will cross paths with Europa 49 times. The mission ends in 2034 with a planned crash into Ganymede - Jupiter's biggest moon and the solar system’s too.

In the 1990s, however, NASA's Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface—much like that of Europa, another moon of Jupiter—may ...