Is the Universe Riddled With "Tatooine Planets?"

Just months after the discovery of the first planet orbiting two stars, scientists have found two more such planets, hinting that the universe might hold millions of these strange systems.

NASA’s planet-hunting Kepler Space Telescope has found two more planets that each orbit dual stars. The discovery, the work of a team led by William Welsh of San Diego State University, leads scientists to believe that alien worlds where two suns burn in the sky are far more common than once thought. And it just so happens that many of these planets may be in their solar systems’ habitable zones.