Apollo program a total of over 20 hours EVA. Apollo 17 was the last of the Apollo program, landing in the Taurus–Littrow region in December 1972. Eugene Cernan commanded Ronald E. Evans and NASA's first scientist-astronaut, geologist Dr. Harrison H. Schmitt. Schmitt was originally scheduled for Apollo 18, but the lunar geological community lobbied for his inclusion on the final lunar landing. Cernan and Schmitt stayed on the surface for just over three days and spent just over 23 hours of total EVA. Source: "Apollo by the Numbers: A Statistical Reference" (Orloff 2004) The Apollo program returned over of lunar rocks and
Apollo 17 lunar sample display wish for peace and harmony among the people of the world. He explained that Harrison Schmitt, his fellow astronaut on the Moon with him, had just picked up a "very significant" Moon rock that they hoped would bring this worldwide peace through the distribution of its fragments. This basalt was later identified as lunar basalt 70017, dubbed the "goodwill rock". Once brought back, this Moon rock was broken up into small fragments and distributed in 1973 by President Richard Nixon to all the countries of the world and to the United States with its territories as a goodwill gesture. The