Six Apollo missions landed astronauts on the Moon between July 1969 and December 1972, and twelve men walked on the lunar surface. The crew of Apollo 13 (April 1970) was supposed to be the third, at Fra Mauro, but never landed after an oxygen tank explosion in the Service Module forced them to use the Lunar Module as a ‘lifeboat’ and return to Earth.
- Apollo 11 (July 1969): Armstrong, Aldrin. Sea of Tranquility. 21.55 kg of samples.
- Apollo 12 (November 1969): Conrad, Bean. Ocean of Storms, near Surveyor 3. 34.4 kg.
- Apollo 14 (January 1971): Shepard, Mitchell. Fra Mauro. 42.8 kg.
- Apollo 15 (July 1971): Scott, Irwin. Hadley–Apennine. First J-mission, with the Lunar Rover. 77.3 kg.
- Apollo 16 (April 1972): Young, Duke. Descartes Highlands. 95.7 kg.
- Apollo 17 (December 1972): Cernan, Schmitt. Taurus–Littrow. 110.5 kg.
Apollo 13 (April 1970) was supposed to land at Fra Mauro but was forced to abort after an oxygen tank explosion in the Service Module. The crew (Lovell, Swigert, Haise) used the Lunar Module as a “lifeboat” and returned safely.
The last human to walk on the Moon remains Gene Cernan, who re-entered the Lunar Module on December 14, 1972. The Nixon administration had canceled Apollos 18, 19, and 20 in September 1970 to fund the Space Shuttle; the last three Saturn V rockets were reassigned to the Skylab program.
For the rest of the Apollo article and the space race overview.