Alien Contact: NASA Exposed (2015)

Documentary about how technology improved our ability to detect UFOs. In 1936, an unidentified flying object crash-landed in the middle of the Black Forest in Germany and caused a shockwave of experiments and tests to try to understand what the technology was and how we could use it to our advantage. After Hitler supposedly used the new-found science to develop the V2 rocket, the post-war world saw German scientists and others from throughout Europe brought together to develop what we know today as the space programme.