Multiple Choice
Saturn's ring system has a very sharp outer edge because
A) particles at the edge have a 7:6 orbital resonance with a pair of co-orbiting moons that lie just outside the rings.
B) the edge marks the Roche limit.
C) of a pair of shepherding moons.
D) Saturn has a thicker atmosphere than Earth.
Correct Answer:
Verified
Correct Answer:
Verified
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