NASA's asteroid plan may be cheapest route to Mars - USA TODAY
URL: http://www.usatoday.com/story/news/nation/2014/08/26/nasa-asteroid-plan-mars/14642623/
Submitted: Wed Aug 27 2014
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CT: UFOSeek News 2013: NASA's asteroid plan may be cheapest route to Mars - USA TODAY
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NASA's asteroid plan may be cheapest route to Mars