The 3rd GBC module using antenna parts (ID 3957). Hemisphere parts with planets pattern of Star Wars Series are used as decoration. A prototype of the module had no decoration of planets. Fortunately, I happened to find the hemisphere parts at my working table which were kept for another purpose, and I could attached them. The module represents that the balls go around each planet and move to the next planet as if a spacecraft traveled around planets in a solar system.
photos via Akiyuki