Pretty cool stuff, but I kinda agree with some of the other freepers - It just gives us more time to contemplate our deaths.
But on another note I recently read that the destruction caused by asteroids, meteors, comets, etc., may not be as huge as was earlier calculated. I remember reading where all it would take is something about 20 miles in diameter to destroy the earth. Now I’m reading it would take something much larger.
In any case we are not yet capable of doing anything to stop one even a few hundred feet in diameter, so until we can, I’d rather not know one is on the way.