More than a hundred years after a small band of humans stole an antimatter-fueled starship and headed away at near-lightspeed, a colony of those renegades' descendants are now struggling to survive on Brimstone, a barely-habitable world of ice and bitter cold four dozen light-years from Earth. In the long run, they hope to slowly terraform Brimstone, making it, if not Earthlike, at least bearable. In the short run-well, life is hard, and everyone...