Results of organic analyses of certain parts of the Surveyor 3 television camera retrieved from the moon by the Apollo 12 astronauts. Organic contamination of the mirror surface and camera exterior (shroud) is reported and is attributed to spacecraft outgassing, Lunar Module descent engine blasting, possible Surveyor 3 engine exhaust products, and unknown sources.

landing by the crew of Apollo 12. They removed parts of it for examination back on Earth to determine the effects of long-term exposure to the lunar environment A Moon landing or lunar landing is the arrival of a crewed or robotic spacecraft on the Moon. The first human-made object to touch the Moon was Luna 2 in 1959, and the first crewed mission to land on the Moon was Apollo 11 in 1969. There were six crewed landings between 1969 and 1972 and numerous uncrewed landings. All crewed missions to the Moon were conducted by the Apollo program, with the last The U.S. robotic Surveyor program was part of an effort to locate a safe site on the Moon for a human landing and test under lunar conditions the radar and landing systems required to make a true controlled touchdown. Five of Surveyor's seven missions made successful uncrewed Moon landings. Surveyor 3 was visited two years after its Moon landing by the crew of Apollo 12. They removed parts of it for examination back on Earth to determine the effects of long-term exposure to the lunar environment.