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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 8:35am11/02/12 8:35am