A countdown first was used as part of a rocket’s launch to the Moon in the 1929 science-fiction movie “Frau im Mond” (Woman in the Moon). Ironically, a countdown led to the voyage of Neil Armstrong, Mike Collins and Buzz Aldrin completing the first mission to actually land humans on the Moon 40 years later. The day Apollo 11 lifted off on its extraordinary flight, July 16, 1969, hundreds of millions on every continent around the world watched and listened on live television to what became the most famous countdown.