ICBM aren’t returning from orbital velocity. They are on parabolic trajectories.
Yes critical mass is a thing check out demon core, critical mass is all that is needed. And it isn’t that much for plutonium only like 50kg.
ICBM aren’t returning from orbital velocity. They are on parabolic trajectories.
Yes critical mass is a thing check out demon core, critical mass is all that is needed. And it isn’t that much for plutonium only like 50kg.