Apollo 11 was Neil Armstrong's famous first step. Apollo 17 was the last manned mission to the moon. In all, 20 Apollo flights were planned but Apollo 18, 19 and 20 were canceled. But in 2007 ...

On this date, Jan. 4, 1970, NASA officially canceled the Apollo 20 mission and transferred the Saturn V rocket that would have sent astronauts to the moon to the Skylab mission. NASA, in a budget ...