Kepler 16b: A Planet with Two Suns . ... Such might be a common adage from beings floating in the atmosphere of Kepler 16b , a planet recently discovered by the space-based Kepler satellite. ... Although multiple star systems are quite common, this is the first known to have a planet. Because our Earth is in the orbital plane of both stars and the planet, each body is seen to eclipse the others at different times, producing noticeable drop offs in the amount of light seen. ...