Ok I stand corrected. Still, if everyone in the world has a knife, except one guy who has a gun, then someone gets shot, you kind of know who did it.

But yeah I got caught being lazy there. I just assumed something with such mass moving at such velocity and of that shape, it would go through the earth like a needle into water. I guess actually it would turn molten pretty quickly, at which point it loses its shape and ability to penetrate.