The speed of space travel is about to make a huge leap forward--cutting a trip to Mars from an agonizing eight months to as little as 30 days! This is all thanks to a revolutionary nuclear fusion ... more 
The speed of space travel is about to make a huge leap forward--cutting a trip to Mars from an agonizing eight months to as little as 30 days! This is all thanks to a revolutionary nuclear fusion engine being tested right now. Trace explains how it works and the impact it'll have. less 
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DNews
Fri, Apr 19, 2013 10:10 PM EDT