E N D
Rings • All Jovian planets have rings. • Rings are on the equatorial plane. • Rings are composed of independently orbiting particles. • Sizes are between small pebbles and cars. • They obey Kepler’s third law: Distant regions have a smaller velocity. • Origin: Either shattered satellite or unstable to form. • Mostly second explanation • Roche Limit: Tidal forces will tear apart a satellite if it is closer to the planet than the Roche limit.