You have to check this out!
The concept’s been around for a while: throw a buncha atomic bombs out the back end and let ’em push… This puppy’s “do-able” in a much nearer time frame than a test bed for a “warp drive” that’s in research now. (Only real barrier? Whiny crybabies scared of the boogyman “A-Bomb”.)
Mars, anyone?
The cat’s outa the cradle over at Adam’s Blog and bombshells are dropping (what a waste of thrust!) at TMH’s Bacon Bits.