You thought something big? well not. BUT HOW?? How is a asteroid going to blow up the milky way? MIND BLOWING RIGHT (maybe strap some virgins on it)
Must resist Gurren Lagann jokes... Seriously, I have no idea. On second thought, I see the battlestation blowing the asteroid up and leaving to storm the galaxy. I guess we'll end up with the galaxy painted red, maybe half dissolved. Not believable a bit, but it would give the message well enough after the many reddened planets.
