Kopernicus Continued Planetary System Modifier is a mod that provides for the graceful introduction of custom celestial bodies in Kerbal Space Program. For those wondering, this is the new thread for the stable branch of Kopernicus under management of R-T-B.  @prestja's old thread can be considered closed, and will soon feature a redirect link to here.  This was done because @prestja though still a project member is busy with school and we did not want to bother him for every conceivable ed