NASA didn’t decide one day, “let’s go to the moon” and then shot off a rocket in the general direction. They started, in 1958, with Project Mercury, which resulted in launching John Glenn into orbit in February 1962. The Russian cosmonaut Yuri Gagarin beat him there by 10 months. Then NASA moved on to Project Gemini, which provided the tools needed to ensure that astronauts could survive and work in space, and finally advanced to Project Apollo that took mankind to the moon in July 1969. I don’t imagine any of us have plans to become space explorers, although I could...