[tempestn]

He appeared to be speaking of a known, ongoing crisis, not a minute possibility of a killer meteor.

[Dove]

Haha! My link doesn't go to a video about meteors. Your point is taken, though. I was just being cute and/or hoping you hadn't heard about this.

But I have heard the possibility of a GRB discussed seriously as a motivator for expanding, not just through the solar system, but through the galaxy.