Humanity's next home may be a habitable moon outside the solar system

Scientists now think that moons orbiting around planets can harbor life under certain conditions. And just by that—even being extremely conservative—the number of celestial bodies capable of sustaining life in the universe may have jumped up by about four trillion. Could one of these habitable moons be our next home? » 9/27/13 2:15am 9/27/13 2:15am