Into that Vast Expanse
The Halo Stars are the stars surrounding the galaxy. The stars comprising the halo are very old and dispersed very thinly across the approximately two hundred thousand light years of the halo’s diameter. Some are grouped together in clusters. The halo is almost entirely unexplored and probably contains few habitable systems. The Koronus Expanse is the section of the halo bordering the Calixis Sector.
This region of the galaxy lends its name to the Halo Artefacts that can be found there.