Apollo 11 insignia. At Scheer's suggestion, the CM was named "Columbia" after "Columbiad", the giant cannon that launched a spacecraft (also from Florida) in Jules Verne's 1865 novel "From the Earth to the Moon". It also referenced Columbia, a historical name of the United States. The astronaut had personal preference kits (PPKs), small bags containing personal items of significance that they wanted to take with them on the mission. Five PPKs were carried on Apollo 11: three (one for each astronaut) were stowed on "Columbia" before launch, and two on "Eagle". Neil Armstrong's LM PPK contained a piece of wood from the
Third-party evidence for Apollo Moon landings the laser is aimed at the Apollos 11, 14 or 15 landing sites; otherwise the expected featureless distribution is observed. The Apollo reflectors are still in use. Strictly speaking, although retroreflectors left by Apollo astronauts are strong evidence that human-manufactured artifacts currently exist on the Moon and that human visitors left them there, they are not, on their own, "conclusive" evidence. Unmanned missions are known to have placed such objects on the Moon as early as 1970. Smaller retroreflectors were carried by the unmanned landers Lunokhod 1 and Lunokhod 2 in 1970 and 1973, respectively. The location of Lunokhod 1