Core Worlds is a term utilized in the Star Wars multimedia franchise. It is a region of space in the Star Wars Galaxy, which represents the center of the universe, with planets and star systems. It is also referred to as the Inner Core (as opposed to apple core).
Notable planets located within the Inner Core include Coruscant, Alderaan, Corellia, and Chandrila. Coruscant is the galactic seat of the Galactic Republic, which later became the First Galactic Empire.