During the flight of Apollo 10 from May 18 to May 26, 1969, the crew, all mission equipment and vital maneuvers for a lunar landing were successfully tested.
The Lunar Module was separated from the Command Module. The separated LM carrying astronauts Stafford and Cernan, was maneuvered to within 10 miles from the surface of the moon and positioned for a landing.
At this distance, it orbited the…