>> more people are talking about it burks that astrode we didn't know was coming till it was too late. you might have three minutes evacuation time. that one is not large enough to catch it far away. >> rose: and if we detect one far enough away, we shoot it down or something? >> no, that's macchio. are you a macho man? >> rose: no. blow theer ou sucker out of the sky (laughter) >> rose: how do you deflect it? >> there are interesting plans. knot hack funded to make it happen. one thing is you take your spaceship, and if that's the astroid, you can bring your spaceship nearby and park it there and they'll feel one another and want to drift towards one another because of mutual gravity but you don't let that happen. you fire retrorockets to prevent that and the act of doing that slowly tugs the astroid out of harm's way. yousdon't have to destroy it. just make sure on its route it doesn't hit earth anymore. it's there to hurt you another day, but if you get good at this, it's like shooting pool cues. you knock them out of the way. >> rose: so that's one of the theory shthetheories? >>