posted on May, 14 2004 @ 01:45 PM
ICBM's are exactly like launching a satellite, except the satellite has an orbit which happens to intersect the Earth's surface.
It is about 25-30 minutes from an ICBM launch to target impact.
The principal military advantage of an ICBM is that they are exceedingly difficult to defend against.
On target, the warhead is coming down at something like 5 (theater ballistic missile) to 7 kilometers per SECOND.
This means they go from the top of the atmosphere to detonation in a couple of seconds, and they're coming in practically straight down.
This is also why ICBM terminal guidance is so difficult.