The reason the rings of Saturn exist is because:
A)the ring material lies within the Roche limit of Saturn.
B)the gravitational influence of Titan confines them to those orbits.
C)the eruptions of Mimas' volcanoes are keeping them supplied with ice.
D)there has not been sufficient time for the ring particles to form a moon.
E)Saturn's rapid rotation is spinning material away from its equator, out into space.

Question

Quizplus · Accepted Answer

The rings of Saturn exist because the ring material lies within the Roche limit of Saturn, which is the distance from a planet within which tidal forces would cause an object to disintegrate due to the planet's gravitational pull being stronger on the near side than the far side of the object. The rings of Saturn exist because the ring material lies within the Roche limit of Saturn, which is the distance at which tidal forces would break apart any body held together only by gravity. In other words, the gravitational pull of Saturn is strong enough to keep the ring particles together, but if they were any closer to the planet, they would be torn apart by gravitational forces.

The Reason the Rings of Saturn Exist Is Because