NASA tests new rover that could explore moon, Mars like never before

NASA is developing a new rover bound for the rugged terrain of Mars and the moon that could put its predecessors to shame. In recent months, the U.S. space agency has been testing a prototype rover here on Earth before the future vehicles it inspires head off into the cosmos to explore our closest celestial neighbors. Recently, for instance, the test vehicle navigated across 16 miles in 37 hours. That may not sound like a blistering pace, but it far surpasses the top speeds of NASA's aging Perse