There have been six manned U.S. landings (between 1969 and 1972) and numerous unmanned landings, with no soft landings happening from 22 August 1976 until 14 December 2013.
Realizáronse outras seis aluaxes tripuladas (entre 1969 e 1972) e numerosas aluaxes non tripuladas, sen aterraxes suaves entre o 22 de agosto de 1976 e o 14 de decembro de 2013.