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lunar cataclysm
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(astronomy) A period of time, approximately 4 billion years ago, during which a large number of impact craters formed on Earth's Moon.
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lunar cataclysm
Geologists study the evidence left by the lunar cataclysm to understand how the early Solar System evolved.
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Geologists study the evidence left by the lunar cataclysm to understand how the early Solar System evolved.
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