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
James May on the Moon Cabigas, where they are able to view the curvature of the Earth and the atmosphere. His training for this was shown in the BBC Four documentary "James May at the Edge of Space". James May on the Moon James May on the Moon is a British documentary in which James May commemorates the 40th anniversary of the Apollo moon landings. It was first aired on BBC Two on 21 June 2009 and on 10 November 2009 on BBC America in the United States. The show saw May interviewing Apollo moonwalkers Harrison Schmitt, Alan Bean, and Charlie Duke, before himself experiencing