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later heavy bombardment
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later heavy bombardment
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月球科学
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later heavy bombardment
晚期强烈撞击事件
由于外太阳系的行星迁徙,导致大量小型天体进入内太阳系,进而导致月球及其他内太阳系行星在短期内发生密集撞击的事件。是月球演化的一个重要假说。
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