Killing an asteroid might be a lot harder than anyone thought

But they did it in "Armageddon"!

Actually, it's really easy to kill with an asteroid. Fine one big enough and aim it at a planet. And let gravity do all the work . . . what? OH! I misread.

I mean, all the same, if NASA, the ESA, and the other space groups wanna give it a try, more power to 'em, obviously....