They SHOULD be working on the pacticalities of nuclear pulse detonation thrust engines. ORION should have been up in the fifties of LAST century.
We have space cruisers up there already were it not for the eco-fringe movement.
Can you give me a thumb nail sketch on a "nuclear pulse detonation thrust engine"? How does it work? Or are we talking sci-fi here??
IMWLTK
SR