Early in Earth's history, a young planet, Theia, crashed into us. Had it been a head-on collision, both planets would've been destroyed. Instead, pieces of Earth and Theia's remains blasted into space. Thanks to gravity, it eventually pulled the rubble together, creating a ring of dust and debris. From this ring, our Moon formed.8964 copyright protection109ＰＥＮＡＮＡ6hQLbzaaBa 維尼
Because it was so close to Earth at first and because of Theia's impact, days only lasted six hours. Over time, though, the Moon moved away, and days became longer.8964 copyright protection109ＰＥＮＡＮＡOJFc85MjRH 維尼
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