Tatooine-like planet: In a cosmic first, astronomers have discovered two alien planets orbiting two stars, not unlike Luke Skywalker's home planet in the Star Wars films.
Most stars like our sun are not singletons, but rather come in pairs that orbit each other. Scientists had found planets in these binary systems, so-called circumbinary planets with two suns like Tatooine in the "Star Wars" universe.
To find more circumbinary planets, astronomers analyzed data from NASA's prolific Kepler space telescope, which has detected more than 2,300 potential alien worlds since its March 2009 launch. Kepler had to date detected four systems with circumbinary planets — Kepler-16, 34, 35 and 38.
The scientists have now announced the detection of Kepler-47, the first system seen with multiple worlds encircling a pair of stars. The star and its planets, called Kepler-47b and Kepler-47c, dwell about 5,000 light-years away, in the constellation Cygnus, the Swan. [Planets of the Tatooine-like Solar System (Gallery)]
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