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Episode 358: Origins of the Dinosaur-Killing Asteroid

Play Oct 20•4:39

The source of the asteroid that killed off the dinosaurs and many other species 65 million years ago remains a mystery. Some researchers thought that the asteroid was the child of a much larger space rock that broke apart 160 million years ago. New research from NASA's WISE satellite seems to indicate otherwise. Space.com on the mystery. Wikipedia on the Baptistina asteroid family.

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