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.

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.

The Earth's gravity is going to bend the orbit of this thing so much that if it's just right, if it passes through this region of space, this kidney bean shaped region called the keyhole, the Earth's gravity will bend it just enough that seven years later on April 13, which is a Friday, I'll note, in the year 2036 ...