Exploding small asteroids more of a threat than big ones

[![Sandia’s Mark Boslough is a leading expert on incoming asteroids, big and small.][1]][2]Put aside the vision of Bruce Willis wrestling with huge space rocks threatening to doom Earth “Armageddon”-style. It turns out that people should be more worried about smaller space rocks that explode in our atmosphere.

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URL: http://www.msnbc.msn.com/id/39615516/ns/technology_and_science-space/

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