Jupiter's Moons: Some Icy, Some Volcanic, And Some Larger Than Our Moon | Video
Thursday, November 8, 2012 - 17:00
in Astronomy & Space
Galileo discovered Io, Ganymede, Europa and Callisto, Jupiter’s four largest moons in 1610. Even today their varied characteristics fascinate astronomers. From giant volcanoes to sub-surface seas, Jupiter's moons are like planets unto themselves.