The rings of Saturn occupy the region inside Saturn's Roche limit.

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The rings of Saturn are located inside Saturn's Roche limit, which is the distance from Saturn where tidal forces would be strong enough to disintegrate a body held together only by its own gravity. Saturn's Roche limit is the distance from the planet where the tidal forces from Saturn would tear apart any object held together only by its own gravity. The rings of Saturn are inside this limit, meaning that they are held together by forces other than their own gravity, such as electrostatic or magnetic forces.

The Rings of Saturn Occupy the Region Inside Saturn's Roche