From about 4.5 billion to 3.5 billion years ago, Earth was bombarded by asteroids, as seen in this simulation showing impacts over time. The size of the circles …
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Early Earth survived a billion years of asteroid impacts | Science News
From about 4.5 billion to 3.5 billion years ago, Earth was bombarded by asteroids, as seen in this simulation showing impacts over time. The size of the circles …
source