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
United States Astronaut Hall of Fame Chaffee, the third astronaut killed in the Apollo 1 fire and the only unflown astronaut in the Hall; Harrison Schmitt, the first scientist and next-to-last person to walk on the Moon; and Jack Swigert and Fred Haise, the Apollo 13 crewmembers not previously inducted. Over two dozen astronauts from the Space Shuttle program have been inducted since 2001. Among these are Sally Ride, the first American woman in space; Story Musgrave, who flew six missions in the 1980s and 90s; and Francis Scobee, commander of the ill-fated final "Challenger" mission. The 2010 class consisted of Guion Bluford, Jr., Kenneth Bowersox,