Jupiter has 60 moons and a ring system. The four gallilean sattelites Lo, Europa,Ganymede, are among the most interesting of all solar system bodies. Other moons, in order of their distance from Jupiter, are: Metis, Adrastea. Jupiters moons are named after Mythilogical .Metis is the closest moon to Jupiter. Metis is 25 miles  in diameter and orbits 79,500 miles  from Jupiter, within its main ring. Andrastea. is the second-closest moon to Jupiter. Adrastea is 12 miles in diameter and orbits 80,000 miles  from Jupiter, within its main ring.