A pulsating Cepheid star blasts Nul with heightened temperatures that make it difficult for Human habitation. This lead the UEE to leave the system unclaimed despite several attempts to terraform the worlds. Nul remained mostly uninhabited until 2571, when the UEES Olympus crashed into Ashana while attempting to eliminate anti-Messer activists. A small population of criminals, drifters and expatriates now call its wreckage home.