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 protection361ＰＥＮＡＮＡAJDyjEjckc 維尼
At first, because the Moon was so close to Earth and because of Theia's impact, days only lasted six hours. Over time, though, the Moon moved away, and days became longer.8964 copyright protection361ＰＥＮＡＮＡpx3SqrPlnt 維尼
然後按「加至主畫面」