.The King of the Planets could not have the best moons, yet four of Jupiter's 95 moons are definitely the best to observe along with a small pair of binoculars or even a small telescope since they form a crystal clear line. The Galilean Moons-- Ganymede, Callisto, Io, and Europa-- were 1st uncovered in 1610 as well as they remain to astound around the world.