Harrison Schmitt cancelled in September 1970, the community of lunar geologists supporting Apollo felt so strongly about the need to land a professional geologist on the Moon, that they pressured NASA to reassign Schmitt to a remaining flight. As a result, Schmitt was assigned in August 1971 to fly on the last mission, Apollo 17, replacing Joe Engle as Lunar Module Pilot. Schmitt landed on the Moon with commander Gene Cernan in December 1972. Schmitt claims to have taken the photograph of the Earth known as "The Blue Marble", possibly one of the most widely distributed photographic images in existence. NASA officially
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