NASA explains meteor explosions over Russia
After an asteroid exploded over Russia's Ural mountains, scientists are making progress understanding the origin and make-up of the unexpected space rock.
http://www.wusa9.com/video/2193385348001/1978340816001/NASA-explains-meteor-explosions-over-Russia
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NASA explains meteor explosions over Russia
After an asteroid exploded over Russia's Ural mountains, scientists are making progress understanding the origin and make-up of the unexpected space rock.
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