An artist's impression of Kepler 16b and its two suns.
by Andrew Fazekas
Like the imaginary Star Wars world Tatooine, a new planet found 200 light-years away has two suns, astronomers announced today.
NASA's Kepler spacecraft uncovered the new planet, dubbed Kepler 16b, as it transited—or crossed in front of—both its parent stars, causing the brightness of each star to dim periodically.
Kepler data first allowed scientists to see that the stars are what's known as an eclipsing binary system—a pair of stars that orbit in such a way that they eclipse each other, causing them to dim, as seen from Earth.