The Galaxy

The Galaxy is the home of the Imperium and all other known civilizations. It is an intermediate spiral galaxy 200,000 light years across with well defined spiral arms and central bulge. The outer arms have been slightly perturbed due to gravitational interactions with the satellite spiral dwarf galaxy known as The Companion. The galaxy has several thousand different names according to the member-states of the Imperium, and while the Imperium has never adopted a single "official name," it is often referred to by the title Domus Imperii, meaning simply "Home of the Imperium." At the center of the Galaxy is a supermassive black hole known as the Grave of the Emperors.