Apollo 10 was a crewedF-Type mission ofNASA'sApollo program to land a man on the surface of theMoon. It was the fourth crewed mission and was a full rehearsal for the actual landing byApollo 11. It was launched on May 10, 1969.[1]: 76 The three astronauts,Tom Stafford,John W. Young andEugene Cernan went into orbit around the Moon. Stafford and Cernan flew theLunar Module to just 14.5 km (9 mi) above the Moon's surface.[1]: 76 The Apollo 10 crew reached the farthest point in their orbit around the far side of the Moon. They have been the farthest any human has traveled from the Earth's surface.[2]