Saturn

Sol's second largest gas giant, with the most moons of any planet in the solar system. The colonization of Saturn's moons began in the 2150s, after the settlement of Ganymede. Of Saturn's many moons, only the regular moons were colonized by settlers, while the irregular moons are used mostly as mines or small space bases. This includes Mimas, Enceladus, Rhea, Dione, Tethys, Lapetus, and Titan, the birthplace of the Rebellion that led to the Solar Civil War. Since the 2250s, the Saturn system has been under the control of the Republic of Titan, which formed its capital on Saturn's most heavily populated moon.