According to a new study, Earth's collision with a Mars-sized protoplanet 4.5 billion years ago didn't just create the Moon. It also gave us our oceans and helped life get started.
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when worlds collide: what happened the day…
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According to a new study, Earth's collision with a Mars-sized protoplanet 4.5 billion years ago didn't just create the Moon. It also gave us our oceans and helped life get started.