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
NASA Astronaut Group 7 also given support assignments for Skylab and the Apollo-Soyuz Test Project, with Bobko and Crippen participating in the Skylab Medical Experiment Altitude Test. Group 7 went on to form the core of early Space Shuttle pilots, upgrading to commander after their first flight, flying 17 STS missions between them, plus the Approach and Landing Tests of . NASA Astronaut Group 7 Astronaut Group 7, referred to in some documents as the USAF MOL Transfer, was a group of seven astronauts announced by NASA on August 14, 1969, and was the last group to be selected during the Apollo era. After