I suppose some people are aware that our world is on a collision course with another "Heavenly body". I don't think it is going to affect the stock market or cause people to stock up on food and weaponry because it's not due to happen for quite a while.
Our galaxy which we call the "Milky Way"is on a collision course with the larger Andromeda galaxy and then there will be fireworks! That's in a few billion years time of course. Read all about it by clicking on the link below, from Space dot com. LONECAT
http://www.space.com/scienceastronomy/astr...s_020507-1.html