Canada lunar sample displays the landing of Apollo 17 on the Moon, which was memorialised by astronauts Eugene A. Cernan and Harrison H. Schmitt when they talked directly to the "youth ambassadors" from the surface of the Moon. Matthews was able to see astronaut Neil Armstrong personally at the luxury hotel in Orlando, Florida. He also got quite acquainted with Armstrong's daughter and became lifetime pen pals with her. The program directors promised each "youth ambassador" a lunar sample from the Apollo 17 mission. In 1973 Matthews was sent the Canadian "goodwill moon rock" encased in a clear Lucite ball about the size of
Far side of the Moon 17 missions since that time, and photographed by multiple lunar probes. Spacecraft passing behind the Moon were out of direct radio communication with the Earth, and had to wait until the orbit allowed transmission. During the Apollo missions, the main engine of the Service Module was fired when the vessel was behind the Moon, producing some tense moments in Mission Control before the craft reappeared. Geologist-astronaut Harrison Schmitt, who became the last to step onto the Moon, had aggressively lobbied for his landing site to be on the far side of the Moon, targeting the lava-filled crater Tsiolkovskiy. Schmitt's ambitious