Tangentially to my planetary construction thread the topic of warp drives and Zero Point Energy and other speculative science ideas has come up. To keep focused whilst still discussing these fascinating topics I decided to start another series of threads this one is for Si-Fi like or advanced propulsion systems and ancilliary or spin off technologies.
IOW we should discuss various schema for FTL and or reletavistic sublight spacefight. Everything from nuclear engines to dimensional travel and the proposed solutions or theories necessary for them to work. Advanced propulsion schemes are hardly exclusive to fiction. NASA itself has delved into nuclear fission, fusion, anti-matter, light sails, laser, and even anti-gravity propulsion. Some with actual hardware (Minerva, Nerva) some laboratory studies and some just conceptual studies.
And there is always the fringe science, basement scientists and even some outright k0oks which; established science aside, I find fascinating. It's all within the bounds of this discussion. Who shall go first?