With a meteor crashing into Russia and an asteroid coming within 17,000 miles of Earth, I asked Phil Plait to join me today on KTRS to explain the last 24 hours of astronomical headlines. Phil writes the Bad Astronomy column for Slate, and his book “Death From The Skies” starts with a chapter all about the danger asteroids pose to humankind.

He explained how the meteor exploded and its pressure wave caused most of the damage in Chelyabinsk, whether the asteroid that missed us today might orbit around and come back to hit us in the future, and whether there’s been any progress in developing a plan to keep big space rocks from hitting us and causing large-scale devastation.

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