The United Core is a space empire living inside of a black hole at the center of the Hyperjump galaxy. They also have holdings in Outer Space and uncharted space. Their technology allows them to null the effects of a black hole and basically use a black hole as a empty area of space instead of a vacuum pulling everything into it.
In addition, the Core also possesses advanced weaponry, more so then the other factions, and their ships have the ability to strafe instead of just going forwards, backwards, and diagonally. Their soldiers are highly advanced and their elite forces are called Core Supersoldiers. Supersoldiers have powered armor that protects from not just plasma guns, but explosions and light melee weapons also.