... been a reasonable vision of the space infrastructure and capabilities at the end of the last century. And in turn, if this had been achieved, where could we be now in 2020? A single-stage-to-orbit fully reusable launch system could easily have...
... enable aircraft to fly over five times the speed of sound in the atmosphere and allow fully or partially reusable space launch vehicles to be built that will radically improve the affordability and responsiveness of access...