Re: There wouldn't be any fallout
Check out some of the pictures of underground nuclear explosions where they manged to get a camera into the cavity created.
Even for a 20kiloton nuke its not very big , now stand that off about 50 feet behind your pusher plate, while making sure the damper system between the pusher plate and the main body of the spacecraft is working.
And away you go..... also it helps to have a pusher plate that weighs about 6000 tons.....
The only drawback for launching a 25000 ton spacecraft is..... who wants to ride the first one into orbit.....
Biting the hand that feeds IT
