This undated photo provided by Northrop Grumman shows The Armadillo rocket, Scorpius launching from the pad at the Northrop Grumman Lunar Lander X PRIZE contest. NASA put up $2 million in prizes for the Northrop Grumman Lunar Lander Challenge as an incentive to spur development of technology by space entrepreneurs. AP Photo logo AP Photo 28 months ago

This undated photo provided by Northrop Grumman shows The Armadillo rocket, Scorpius launching from the pad at the Northrop Grumman Lunar Lander X PRIZE contest. NASA put up $2 million in prizes for the Northrop Grumman Lunar Lander Challenge as an incentive to spur development of technology by space entrepreneurs.