It’s estimated that one-sixth of the world’s population watched the historic Apollo 11 landing on the Moon in July 1969. But as the subsequent missions rolled by, interest quickly waned, and NASA’s budget became stretched. With plans also in the works to build a space station in Earth orbit, called Skylab, the remaining three Apollo missions – 18, 19, and 20 – were scrapped.
The original Apollo plan had called for ten missions to the surface of the Moon in total. This would include landings across the lunar surface, and there were even some suggestions that a mission could go to the far side of the Moon. But in January 1970, NASA announced that Apollo 20 would be cancelled. Later that year, Apollo 18 and 19 were also dropped, while…
