NASA’s leader is worried about an international race for lunar real estate, as China prepares for a series of missions to the Moon. Related Content NASA astronauts are getting ready for a big Moon mission test Now NASA has to figure out how to tell time on the Moon Are self-driving cars safe enough yet? CC Share Subtitles Off English Share this Video Facebook Twitter Email Reddit Link view video Are self-driving cars safe enough yet? China this week is planning to launch a robotic spacecraft —