Butler You won't find a keyhole.

Now just about that time, the practice of surgery evolved from big to small, from wide open incisions to keyhole procedures, tiny incisions.

And you can hit it again. That's kind of ham fisted. You might just push it into a third keyhole or whatever, so you don't do that.

The problem is, what happens if you hit this asteroid, you've changed the orbit, you measure the orbit and then you find out, oh, yeah, we just pushed it into a keyhole, and now it's going to hit us in three years.

you can't plan that kind of stuff Apophis is going to hit us. And it's 250 meters across, so it would do Now the good news is that the odds of it actually passing through this keyhole and hitting us next go around are one in a million, roughly very, very low odds, so I personally am not lying awake at night worrying about this at all.