 All nine crewed missions to the Moon took place as part of the Apollo program over a period of just under four years, from 21 December 1968 to 19 December 1972.The 24 people who have flown to the Moon are the only people who have traveled beyond low Earth orbit.Eleven of them are still living 

Jim Lovell, John Young, and Eugene Cernan are the only three people to have flown to the Moon twice.