[1.3] Hypothetical Worlds: will add planets to the Kerbol system that represent some objects scientist think (or used to think) might exist. This mod is compatible with OPM! Changelog:   Red: Basic idea, not started Orange: Buggy and/or just started Yellow: Prototype finished Light Green: Almost done (description/science defs) Green: Completely finished   unnamed: lava planet close to the sun half the size of kerbin Moradus: second