.The King of the Planets might not possess one of the most moons, but 4 of Jupiter's 95 moons are definitely the simplest to see with a tiny pair of field glasses or even a little telescope given that they form a crystal clear line. The Galilean Moons-- Ganymede, Callisto, Io, as well as Europa-- were actually first discovered in 1610 as well as they continue to astound astrologers across the globe.