Our asteroid belt is unique — and that’s why life may be rare in the Galaxy

Our asteroid belt, which is situated between Jupiter and Mars, has traditionally been seen as something of a nuisance. Every once in awhile one of these rocks dislodges itself and heads straight for Earth, what often results in a cataclysmic impact. But ironically, as a new study from the University of Colorado… » 11/02/12 8:35am 11/02/12 8:35am