The end of mankind.

I think one's about to hit near Paris.

Someday he's gonna bump into the wrong kind of tree... and get his nose busted.

So let's say this guy bumps into that, then he'll bump over there , so that energy, this bumping energy, or this kinetic energy, well, some of it will be transferred, or you could even say some of that temperature, some of that heat will be transferred to these water molecules.

Is this going to hit us? We're efforting that as we speak, sir.

That notwithstanding, the punishment of aggression, which was deemed to be an international crime par excellence would encounter tremendous obstacles.

And, when she stops suddenly, velocity decreases rapidly back to zero miles per hour, her brain would crash into the other side of her skull, turning her brain into mush.

We don't really have the technology to predict comet trajectories, or when one with our name on it might arrive.

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.