.The Master of the Planets might certainly not have one of the most moons, however four of Jupiter's 95 moons are undoubtedly the easiest to view with a little pair of field glasses or even a small telescope since they develop a clear line. The Galilean Moons-- Ganymede, Callisto, Io, and Europa-- were 1st discovered in 1610 and they continue to blow away stargazers across the globe.