Very little is known about this beautiful and mysterious phenomenon. It is massive, spanning almost 20 lightyears across.
After The Freespacer Genocide and Related Battles in YE 30, those Freespacers who did not take refuge in the space of nearby nations instead fled here. The unstable space creates a natural defense that not only prevents FTL travel, but disrupts sensors, which makes it virtually impossible for outsiders to locate their ships.
By YE 38, there are many small fortified objects now imbedded within this space, including not only the rogue planet Arsenal, but also many unstable and forgotten former-Independent Worlds League holdings.