unfortunatly the odds get bigger and bigger of a "life ending" astaroid slamming into the earth. it's happend before, wipping out the dinosours, and in anartica in 1883. we are on a ball spinning and whirrling around a rock laiden belt in our galaxy.

the only good news is that we should be long dead when it happens, and our sun is only going to last another 5,000 or so.