READ THIS: Outer Planets Mod is no longer being actively maintained through this thread. Click this link to go the new thread, where OPM is being developed by a group of people. Outer Planets Mod Outer Planets Mod is a mod that expands the outer edges of the Kerbol system, to create something akin to the real Solar System’s. It adds Kerbalized versions of Saturn, Uranus, Neptune and Pluto, as well as several of these planets' moons. At the moment not all of these planets have moons aro