Comment Re:Nuclear weapons are blase (Score 1) 138
Did you get this from a Clancy novel? I think this idea was used on a Chinese nuke base by the Americans in the protection of Russia.
Anyway, while you can vary initial launch speed, you still have to penetrate the atmosphere and still end up with a terminal velocity that is high enough to have much oomph. There is a reason most meteorites burn up in atmosphere.
If you try to hit the earth with something at mach 30, my bet is that you can't get there before your object has evaporated. And if you go at much lower speed, your mass has to be very high to make up for that, and your weapon will then be very expensive to get into orbit
And again, you still have the problem that you develop a new solution for something that already has a cheap non nuclear equivalent in the form of cruise missiles. Additionally, your sattelites are sitting ducks for anyone to pick off.