Astronomers say they've found a rogue planet with no sun

A planet six times more massive than Jupiter has been spotted drifting, cold and alone, eighty light years from Earth. It's a sunless world, and astronomers say it could be the first real example of a free-floating planet to date. But how it got separated from its parent star in the first place remains a mystery. » 10/10/13 1:20pm 10/10/13 1:20pm