NASA engineers operating the Kepler Space telescope have announced this morning that they have discovered the first planet to orbit a twin-star system. The planet is a gas giant about the size of Jupiter, and its temperature is about -70 C, so it's not really habitable. What is important about this discovery is that it proves that planets can be formed on binary star systems. Before today, it had been speculated but never proven.
The newly discovered planet is officially designated as Kepler 16b, but NASA officials have proposed that it should be named Tatooine, after the twin-sun planet in Star-Wars, barring any licensing issues with Lucasfilm...
The Kepler 16 star system is about 200 light-years from earth.
[kepler.nasa.gov]