... Galilean moons that were independently discovered by their namesake Galileo Galilei in 1610; namely, Europa, Ganymede, Io and Callisto. These moons stand out due to their huge size; all four are over 3,100 kilometres (1,900...
... years making detailed observations of the giant gaseous planet Jupiter and three of its largest moons, Ganymede, Callisto and Europa. Data collected from the mission will be used by scientists to hopefully learn more about the...