A series of rings surrounding Saturn, composed of dust and solid fragments and distributed in the equatorial plane of the planet at several distances. The rings are just a few hundred meters high and can not collapse into a satellite, because they are located inside the Roche limit.
Many planets are orbited by rings of rock, ice and/or dust. Saturn, Jupiter, Uranus, and Neptune have rings. Planet Roche Limit (km) Roche Limit (miles) Earth 18,470 11,470 Jupiter 175,000 108,000 Saturn 147,000 92,000 Uranus 62,000 39,000 Neptune 59,000 37,000