By: Stephanie Pappas, LiveScience Senior Writer Published: 04/16/2013 10:01 AM EDT on SPACE.com COLORADO SPRINGS, Colo. — They'll be crammed into a space the size of an RV for more than a year, breathing recycled air, subsisting on dehydrated food and drinking their purified urine. If they die, they'll be freeze-dried in a body bag.