Avoiding A �Crash Course� In Planetary Defense

GARDEN GROVE, California � There is certainty in the thought that an asteroid or comet loitering in deep space has Earth�s name on it. While a civilization-snuffing impact is a low probability, it is not zero.

But there are other trouble-makers out there too. They are the smaller asteroids, and far more numerous. They too could mess up the day, but in a more localized way.

The technologies and techniques to defend Earth from such malicious cosmic interlopers were tackled at The Planetary Defense Conference: Protecting Earth from Asteroids held here February 23-26, and sponsored by The Aerospace Corporation and the American Institute of Aeronautics and Astronautics (AIAA)

How best to deflect or defeat nature�s own terrorist attack on our own planetary turf conjures up all kinds of thinking -- from nudging to nuking objects that have Earth in their cross-hairs

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well they speak about space based lasers targeting on astroids from our moon. and several other technologies.
makes me wonder when they are trying to build it or if there is another reason to put giant lasers on the back of the moon.