The reason why the individual particles within Saturn's rings have not combined together by mutual gravitational attraction to form one or two moons is that:
A) the gravitational force from the Sun is sufficient to prevent coalescence.
B) tidal distortion forces from the planet are greater than the mutual gravity between the particles.
C) the excess heating from Saturn has melted the ice on the rocks so that the rocks will no longer stick together.
D) they are moving too fast to stick together even if they bump into one another.
Correct Answer:
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