The two tiny moons of mars, names phobos and deimos, revolve around mars relatively fast. They are both irregularly shaped and are thought to be captured asteroids. Phobos is 27 km. across at its longest while Diamos is about 15 km across at its longest. The large numbers of craters shows tht the moons have been hit many times by asteroids and comets, and suggest that the moons are fairly old.
Io is the innermost of Jupiter's four galilean moons. Io's volcanoes were discovered by the Voyager space craft. Calculations show that tidal forces make Io's surface move in and out by 100 meters.
The Galilean moons are any one of the four largest satelites of Jupiter - Io, Europa, Ganynede, and Callesto - that were discovered by Galileo in 1610. The characterisitc are of the moons are that they are bigger than the earths moons, they have a bigger diameter than 200 km, and they are mostly made up of Ice and Rock.
The difference between Saturn's ring and the other planets rings is that Saturn's rings are believed to be the remains of a large comet like body that entered Saturn's system and was ripped apart by tidal forces while the other planets rings re just particles taken from different celestial bodies.
The most interesting part was that Saturn's ring was a large comet like body that was ripped apart. Who knew it would become so pretty
