3화: 갈릴레오 건설 중 느슨해진 태양광 패널을 회수하는 과정에서 실종된 우주비행사가 발견됩니다.

3

During the construction of Galileo, a large solar panel comes loose and has to be retrieved, leading to the discovery of a lost cosmonaut who was going to land on the Moon in June 1969. (Source: Wikipedia)