The Core is a region of the Terran Sphere centered around Sol.

'The Core' in general usage refers to the Solar Union and the nations directly bordering it, although officially it extends to a uniform 500 lightyears from the Sol system. The Core contains the oldest colonies of the Terran Sphere, being the most developed in terms of Terraforming, Jump gate infrastructure, industrial base, technology level and sheer economic power. As a result, a large part of the sphere's military and political power is focussed on the Core. Recently, however, several of the more powerfull factions of the Hinterlands have begun catching up to the Core.

Notable nations of the Core: