In order from closest to the East Star:
The Complisolar System is rather dense, which made the Compliens' initial jump into space much easier than normal due to the glut of available gravity wells. The system is also very close to other star systems like Polunski and Blagluyjhi Millandræ, with only one or two lightyears between. Naturally, this helped jumpstart the Complien space program, which would lead them into battles with the Humanoids and Mogurians.
- This solar system is renowned for its relative lack of space debris due to the various Cosmic-type Compliens wandering around and picking up trash.