In 1939, 'Buck Rogers' came to the big screen. And science fiction movies would never be the same. Here's why Buck mattered and how he created 'Star Wars' and 'Captain America.' ...

The main role of Buck Rogers changed three times, played by three different actors: Earl Hammond, Kem Dibbs, and Robert Pastene. In the only surviving episodes, it's Pastene in the lead role as Buck.