Sol system

For The Expanse Roleplaying Game sourcebook, see Sol System.

The Sol system, otherwise known as the Solar System, also just Sol or sometimes SOL, is a gravitationally-bound, planetary system comprised of eight primary planets, numerous dwarf planets, and various other natural satellites orbiting a G-type main-sequence star commonly referred to as the Sun.

It is the birthplace of humanity, with all terrestrial life originating on the third planet, Earth. Humanity has since spread throughout the Sol system, colonizing planets, their major satellites, and even asteroids wherever possible. After the reactivation of the Rings, humanity was finally able to escape the confines of its home system.