Ronald Evans (astronaut) 19 astronauts selected by NASA in April 1966. He served as a member of the astronaut support crews for the Apollo 7 and Apollo 11 flights, and as backup Command Module Pilot for Apollo 14. Evans' only space flight was as Command Module Pilot of Apollo 17, the last scheduled U.S. manned mission to the Moon. He was accompanied by Eugene Cernan and Harrison Schmitt. While Cernan and Schmitt landed and worked on the Moon in the Taurus–Littrow valley, Evans remained in lunar orbit on board the Command Module "America", completing assigned work tasks which required visual geological observations, hand-held
Larry Taylor (geochemist) of Washington, and finally a Fulbright Fellowship at the Max-Planck-Institüt für Kernphysik in Heidelberg, Germany. In December of 1972, Taylor was offered to be in the “back room” of Johnson Space Center during the Apollo 17 mission where he had the opportunity to directly advise astronauts on their extravehicular activities on the Moon. Subsequently, Taylor became very close friends with Harrison Schmitt, the last man to step on the lunar surface and the sole geologist to ever reach the Moon. The two would collaborate throughout their careers with Schmitt playing an influential role in helping Taylor develop the Department of