NASA considers sending a spare Mars rover to the moon to rev up preparations for lunar base

An engineering development version of the NASA rovers currently operating on Mars takes a spin at the Jet Propulsion Laboratory in California. (NASA via YouTube) NASA is considering repurposing an engineering development version of the nuclear-powered Mars rovers for a different destination: the moon’s south polar region. The plan calls for turning the test rover, which is currently sitting at NASA’s Jet Propulsion Laboratory, into a lunar explorer named PROMISE (“Polar Rover for Observation, Ma