. "Thirty-two astronauts were assigned to fly in the Apollo manned lunar landing program. Twenty-four of these left Earth\u2019s orbit and flew around the Moon (Apollo 1 never launched and Apollo 7 and Apollo 9 were low Earth orbit spacecraft testing missions). In addition, nine astronauts flew Apollo spacecraft in the Apollo Applications Programs Skylab and Apollo\u2013Soyuz Test Project.Twelve of these astronauts walked on the Moon\u2019s surface, and six of those drove Lunar Roving Vehicles on the Moon."@en . .