The Apollo 12 Moon mission was the second time that astronauts walked on the lunar surface. Pete Conrad, Alan Bean and Richard Gordon flew on the mission which touched down on 19 November 1969 near the earlier unmanned Surveyor 3 probe's landing site. Conrad and Bean walked on the lunar surface and collected rock samples and pieces of the Surveyor 3 spacecraft. The two astronauts spent a total of seven-and-a-half hours on the lunar surface during their two trips outside the Intrepid. Conrad made this photograph of Bean holding a lunar soil sample container at Sharp Crater. NASA scientists wanted to study how more than two years on the Moon had affected the probe.