.The Master of the Planets might not have the absolute most moons, but four of Jupiter's 95 moons are undoubtedly the easiest to view with a tiny set of field glasses or a little telescope given that they develop a very clear line. The Galilean Moons-- Ganymede, Callisto, Io, as well as Europa-- were 1st found in 1610 and also they continue to impress stargazers around the world.