I've heard talk of some of the probes that NASA has planned for the future.(I can't remember what the mission was) just that they said Nuclear powered and that it would be pretty fast. My question is, If's nuclear powered.how would that propell a space craft? Is it from making electriity that would power some kind of engine that makes thrust like an ION engine?? You can't make thrust directly from a nuclear powered craft can you? Sorry I don't know hardly anything about this topic but it really interests me. Thanx J.A.