.The Master of the Planets may certainly not possess one of the most moons, yet 4 of Jupiter's 95 moons are undoubtedly the simplest to see with a tiny set of field glasses or a small telescope because they develop a crystal clear line. The Galilean Moons-- Ganymede, Callisto, Io, and Europa-- were 1st found in 1610 and they continue to surprise stargazers around the world.