160: Going back in time with Dr. Bottke
from Spacepod
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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How long is this episode of Spacepod?
This episode is 20 minutes long.
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This episode was published on September 22, 2019.
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