Harrison Schmitt credits the image to the entire Apollo 17 crew. While on the Moon's surface, Schmitt — the only geologist in the astronaut corps — collected the rock sample designated Troctolite 76535, which has been called "without doubt the most interesting sample returned from the Moon". Among other distinctions, it is the central piece of evidence suggesting that the Moon once possessed an active magnetic field. As he returned to the Lunar Module before Cernan, Schmitt is the next-to-last person to have walked on the Moon's surface. After the completion of Apollo 17, Schmitt played an active role in documenting the
Astronaut-politician by "The New York Times" as a "political neophyte". Jack Swigert, who had flown on the ill-fated Apollo 13 mission, was elected in November 1982 to the United States House of Representatives representing Colorado, based on a plan he developed that "evolved from his training as an astronaut and the success of the Apollo exploration of the Moon", but died before taking office. NASA's Shuttle program has produced American and foreign politicians. In 1985, Senator Jake Garn went into space aboard the STS-51-D flight as a payload specialist and in 1986 Rep. Bill Nelson of Florida became the second sitting