.The King of the Planets may not have one of the most moons, but 4 of Jupiter's 95 moons are certainly the easiest to see along with a tiny pair of field glasses or a tiny telescope considering that they create a clear line. The Galilean Moons-- Ganymede, Callisto, Io, as well as Europa-- were initial uncovered in 1610 and they continue to impress across the globe.