Jovians

The term Jovians referred to people who lived in the Jupiter system, although there was no appreciable distinction between those and the people who later left the system. Within the Empire they were known only as a mysterious 'other' and the details were suppressed.

Originally the Jovians were the scientists and their families that founded the research colonies on Ganymede and Europa starting around 200 ES. The collapse of the states on Terra lead the colonies to be cut off and during this isolation they developed into the Jovian Collective.

Once the Jovian Treaty was signed in  324  ES the Jovians felt safe from interference down well and began their great infrastructure projects like the Jupiter Sphere and interstellar colonisation.

When the Empire fell in 828 ES the Jovians were in a position to aid the former imperial subjects and help build the Sol Sphere.