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In his day job at the U.S. Army Space and Missile Defense Command, Travis has explored ways to protect the Earth from collision with an asteroid, but outside the office he'll actually put some of these ideas to the test.
First Air Date : Sep 28, 2011
Last Air date : Jan 17, 2013
Episode : 36 Episode
Season : 2 Season
Runtime: 26:14 minutes
Studio: National Geographic
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