This article says it all…
Propulsion Technology Mostly Unchanged After 50 Years
Although it’s been a half century since America entered the space age, the basic propulsion concepts used to push Explorer I into space will be the same type of propulsion that the nation will use to begin the next half century of space exploration…
Sigh…
I guess they would focus on a space elevator if only the technology for nanotubes was close to the minimum threshhold for it to work.
I guess its up to the private sector to do everything. 😉
its good to invest money on space
its good to invest money on space
Clearly this is not the market speaking …