Orbital Sciences Corporation

Harrison Hagan "Jack" Schmitt is an American geologist, a retired NASA astronaut, university professor, and a former U.S. senator from New Mexico.... He is the twelfth and last of the Apollo astronauts to arrive and set foot on the Moon, as Apollo 17 crewmate Eugene Cernan exited the Apollo Lunar Module first. However, as Schmitt re-entered the module first, Cernan became the last astronaut to walk on and depart the moon. Schmitt is also the only geologist as well as the only person to have walked on the Moon who was never a member of the United States Armed Forces, although he is not the first civilian; since Neil Armstrong left military service prior to his landing in 1969. Born in Santa Rita, New Mexico, Schmitt grew up in nearby Silver City. He received a B.S. degree in geology from the California Institute of Technology in 1957 and then spent a year for graduate studying geology at the University of Oslo in Norway. He received a Ph.D. in geology from Harvard University in 1964, based on his geological field studies in Norway. Before joining NASA as a member of the first group of scientist-astronauts in June 1965, he worked at the U.S.
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