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
Curt Michel NASA scientist-astronaut in June 1965. He resigned from NASA in September 1969 without having being assigned to any spaceflight missions. Michel believed that it was his decision to resign, after it became clear that he would not be given a flight assignment, that motivated the scientific community to demand that his fellow scientist-astronaut Harrison Schmitt be reassigned to Apollo 17 after Schmitt's planned mission on Apollo 18 was cancelled. After his resignation from NASA, Michel returned to teaching and research at Rice, where he also served as chair of the space physics and astronomy department from 1974 to 1979. He