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Is there a good theory why there's only one moon, rather than many moons? The diagrams show, "moonlets" - what happened to them? And why didn't this new mass no

Is there a good theory why there's only one moon, rather than many moons? The diagrams show, "moonlets" - what happened to them? And why didn't this new mass not just collide back into Earth again?

InclinedPlane 10y ago
Yes. The dynamics of the situation would have caused the moons to merge (or crash into the Earth).