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
Back to the Moon Back to the Moon Back to the Moon is a science fiction novel and Homer Hickam's first fictional book. Published in June 1999, Hickam wrote Back to the Moon using insider information he learned from NASA. The prologue of the novel begins with a dramatized account of the second EVA of Apollo 17. Astronaut Jack Schmitt discovers orange soil in Shorty Crater at the very end of the EVA and gathers samples in a race against time to get back to the LEM. Meanwhile, Wernher von Braun is watching the end of the mission on TV with other NASA engineers.