This mod adds new planets to the stock Kerbol System. Please check the forum thread for more info.
https://forum.kerbalspaceprogram.com/topic/225498-beyond-jool-071-no-release-yet/#comment-4410689

To install, download Kopernicus and dependancies into the Gamedata subfolder. Then insert the following folders from the zip file into Gamedata: 001_DuckweedUtils, Beyond Jool, MitchellNetravali (inside 000_NiakoUtils).
