https://padlet.com/21042291/nxdyf250grqn9v8o en-us 2021-02-22 17:07:52 UTC 2021-02-22 17:23:52 UTC hello@padlet.com 21042291 https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227591438 Accumulation of rocks and dust caused by gravity.]]> 2021-02-22 17:11:48 UTC https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227591438 21042291 https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227599949 A young planet hit Earth, causing the debris from the collision to form the Moon.]]> 2021-02-22 17:13:16 UTC https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227599949 21042291 https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227601369 Earth's surface starts to cool.]]> 2021-02-22 17:13:31 UTC https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227601369 21042291 https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227602805 Many small meteorites filled with small amount of water hit Earth over a long period of time. ]]> 2021-02-22 17:13:46 UTC https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227602805 21042291 https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227604063 Dense materials flowed to the bottom and cooled the Earth to accumulate layers.]]> 2021-02-22 17:14:00 UTC https://padlet.com/21042291/nxdyf250grqn9v8o/wish/1227604063