[Roanon]

Originally posted by narf poit chez BOOM:
yes, i know you don't hear a bang. unless you stick your helmet on the asteriod, in which case the concusive force is transmitted. and there is concusive force, wether there is an atmosphere or not. and several sci-fi auther's have written about using nukes.

Hmm, if at all, then the "concussive force" will be transmitted regardless if you stick your helmet on the asteroid or not .
I will not continue this. Just let me point out that you might want to reevaluate your physics knowledge if you heavily rely on sci-fi authors. Or mainstream cinema/TV