Former NASA physicist and founder of the Tau Zero Foundation Marc Millis talked about the prospects of interstellar and faster-than-light (FTL) travel in a recent interview with Forbes contributor Bruce Dorminey. Millis retired from NASA early to pursue interstellar travel research, and says that if made a priority, in half a century we could send an unmanned probe to Alpha Centauri at one tenth the speed of light. However, fuel and funding are a huge limitation, and Millis and many others still struggle with the question of how to run a space program on "less money than is [annually] spent on potato chips." For more on interstellar travel and how FTL may actually be possible, check out the whole interview.