Posted: Nov 14, 2010 1:42 am
Okay, a more broadly encompassing perspective people may wish to discuss is at http://en.wikipedia.org/wiki/Interstellar_travel . It includes some bizarre-sounding sub-topics, but it also points to at least one other propulsion scheme that doesn't involve physics not yet known and doesn't seem to have been ruled out as infeasible. I'm satisfied that I know what I want to about the subject right now from my reading of it.