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
Fallen Astronaut condition that it be displayed "with good taste and without publicity". The replica was given to the Smithsonian Institution on April 17, 1972, the day after CBS anchorman Walter Cronkite referred to the "Fallen Astronaut" and plaque as the first art installation on the Moon during the broadcast of the Apollo 16 launch. It is now on display with a replica of the plaque in the Museum's National Mall Building in the Space Race Wing, Gallery 114. In May 1972, Scott learned that Van Hoeydonck planned to make and sell more replicas. Believing that this would be a violation of