Absolutely amazing! It must take a lot of dedication and time to build something like that, after all it's not like you can just by a kit off the shelf! And again, hat's off to the pilot, I wonder if they had any mishaps trying to learn to fly it? :)
I think the current idea is to launch the rocket initially with a traditional rocket stage to get it in orbit at which point the nuclear rocket won't be active or live, this won't be activated/made live until it's safely in orbit, therefore if the rocket blows up within the atmosphere there...
When I talk about a nuclear rocket as above I'm talking about nuclear fission not fusion. They do work, they started messing around with them in the 50's and as I understand it is this what NASA and DARPA will be testing. I think the main problems earlier were safety (public concern!) and...
Nuclear seems to be the only feasible and realistic way at the moment with our current technology, it's bound to happen eventually until we find other answers to other technologies such as "Anti-matter" which could be a future possibility! :eek: