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When Earth Was Bombarded by Asteroids | NOVA | PBS
What studying the surface of the Moon revealed about Earth’s apocalyptic youth. Four and a half billion years ago, Earth was battered by relentless asteroid impacts powerful enough to vaporize oceans and melt its crust. Despite the chaos, life emerged anyway. 📺 Watch the full episode, "Asteroids: Spark of Life?" https://www.pbs.org/wgbh ...
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