NASA's Kepler Space Telescope Finds Double-Sun System

NASA's Kepler space telescope has discovered its first circumbinary planet, a planet that orbits two suns. The cold, Saturn-sized planet is not in the star system's habitable zone. But, someone near the planet's surface could see double sunrises and sunsets, similar to what Luke Skywalker saw on Tatooine in the 1977 movie, "Star Wars."