Inner Sphere

The Inner Sphere is a term from the "BattleTech" universe, referring to the core group of planets and star systems that form the central political and military region of humanity. It encompasses the most developed and densely populated areas, where the major factions and governments are concentrated. The Inner Sphere is often contrasted with the Outer Sphere, which includes more distant, less developed regions. In essence, it represents the main hub of human civilization, political power, and economic activity within this fictional universe.