On Nov 17, 7:41*pm, wrote:
On Saturday, November 17, 2012 4:20:18 PM UTC-8, bob haller wrote:
On Nov 17, 5:40*pm, wrote:

"Scientists have given some thought as to how we'll

defend ourselves when a giant asteroid inevitably

heads our way and solutions range from paintballs

to nukes. A team at Iowa State University has settled

on the latter, and they've got plans for ship to do it

waiting in the wings."

See:

http://gizmodo.com/5961485/meet-the-...spacecraft-tha....

blowing up asteroids is a bad idea creating much more debris over a

wider area, doing more damage than a single impact

If the bits are small enough, won't they burn up in the atmosphere?

that would require near vaporizing the asteroid, unlikely to be
successful