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Ep. 644: Is Earth… Normal?

Astronomy Cast

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Are We Normal or Not Normal?

Our position helps or our position. The volume that exists to put stars in increases as you look at larger and larger radiuses. So there's a lot of crazy math involved in saying, are we normal or not normal? What i can say is our distance from the centre of the galaxy means we are not somewhere where the stars are so dense that we had to worry about necessarily having planets stolen on a regular basis early on before we chance to form life. And we probably don't need to worry about having planets stolen into the future.

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