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A 40 million year spike in impact craters near the paleo-equator suggests that a large asteroid nearly hit the planet, broke apart from tidal forces, formed a ring, and then fell to the surface over millions of years.
Read MoreA 40 million year spike in impact craters near the paleo-equator suggests that a large asteroid nearly hit the planet, broke apart from tidal forces, formed a ring, and then fell to the surface over millions of years.
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