There’s a real-life Tatooine.

For the first time ever, astronomers have found a planet with two suns! The Kepler-16 system is a pair of binary stars with a large planet orbiting them both. The astronomers found the planet is 200 light-years away from Earth, using NASA’s Kepler space telescope.

This lends some credibility to the imaginings of George Lucas. Luke Skywalker’s home planet, the desert planet Tatooine, has two suns, something that was unheard of in the real world until now. However, while Tatooine was crawling with all sorts of alien life, there’s no indication that Kepler-16 is capable of sustaining any life on it at all.
(source)