Just in case you've run out of things to worry about, here's something for you. A 210-450 foot asteroid is going to zoom past within relative spitting distance on earth this Saturday. It's not going to come quite as close as last month's global (almost) killer, but at one 2.5 times the distance of the moon, it's still a squeaker. So, there's nothing to worry about except this fun fact: this asteroid was only discovered a week ago. Who knows what other fun surprises are out there, and how much warning we'll get before they swing by for a visit? Just something for you to mull over this Friday ...