160: Going back in time with Dr. Bottke

Spacepod
22/09/2019 20 min Episodio 160
160: Going back in time with Dr. Bottke

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Episode Synopsis

Dr. Bill Bottke stops by the show to talk about ancient craters on the Moon and Earth. He tells us about how you can figure out crater ages by looking at the nearby rocks, and how that led him and his colleagues to figure out that the impact rate on Earth changes with time.
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