re: My logic, and a slight amendment
Certainly, for the energy reasons alone that you cite the vast majority of traffic will still be airplanes, but there will be sub-orbital traffic by the 2030s.
Space/Science » in reply to My logic, and a slight amendment
Certainly, for the energy reasons alone that you cite the vast majority of traffic will still be airplanes, but there will be sub-orbital traffic by the 2030s.