Twentieth Century Space Travel

Andrea thinks that NASA could have paid for itself by selling and profiting from its discoveries and technological off-shoots, also that Projection Orion would have been able to send a large craft to Alpha Centauri in 99 years. Maybe sf ideas of the later twentieth century and early twenty-first century could have come about after all?

Back home from Andrea's place overlooking Morecambe Bay, I need to clear my head from a bus journey (no longer driving a car), meditate and read or blog or maybe just read. 

Back here later today or tomoz, maybe.