 Besides the 12 people who have walked on the Moon, 12 more have flown to within 0.001 lunar distance of its surface.During each of the six missions with successful lunar landings, one astronaut remained in lunar orbit while the other two landed.In addition, the three-person crews of Apollo 8 and Apollo 10 also entered lunar orbit, and the crew of Apollo 13 looped around the Moon on a free-return trajectory.