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
John Young (astronaut) spacecraft for their tenth cargo resupply mission to the International Space Station would be named S.S. "John Young". In the 1995 film, "Apollo 13", Young was played by Ben Marley. In the 1998 HBO miniseries, "From the Earth to the Moon", he was played by John Posey. Young is one of the astronauts featured in the documentary film and book, "In the Shadow of the Moon"; the Discovery Channel series, ""; and the documentary film, "The Wonder of It All". John Young (astronaut) John Watts Young (September 24, 1930 – January 5, 2018) was an American astronaut, naval officer and