in reply to Re^2: The worst case scenario
in thread The worst case scenario

Somehow, this isn't altogether comforting. Even a fairly small rock, 1 or 2 km. in diameter, could ruin your whole day. At that size, huge clouds of dust would be spewed up, probably causing seriously cold weather for a few years. Also, it would adversely affect any city it landed on by annihilating it. Depending on which city it was, this might be considered a bad thing.