A mockup of NASA's next generation moon rover, the Space Exploration Vehicle (SEV), on display at the agency's Johnson Space Center in Houston. The SEV has since been converted into a wheel-less ... more 
A mockup of NASA's next generation moon rover, the Space Exploration Vehicle (SEV), on display at the agency's Johnson Space Center in Houston. The SEV has since been converted into a wheel-less vehicle designed for visiting asteroids. less 
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SPACE.com | Photo By Clara Moskowitz/SPACE.com
Tue, Nov 13, 2012 10:34 AM EST