Justice League: A Better World
A space sector is one of 3600 territorial units of known space in what is sometimes referred to as the Oan Protectorate as designated by the Guardians of the Universe. Some sectors have no life whatsoever, while other sectors are teeming with worlds ( see Planets ). Each sector is shaped like a triangular wedge and points towards planet Oa, which is considered the center of the universe a term which is at times debatable. Each sector is patrolled by two members of the Green Lantern Corps, generally indigenous to a world within their given sector. It is said this allocation makes Oa one of the best protected worlds in the universe. Oa is located in Sector 0, the epicenter of the sectors. Therefore, a Green Lantern is actually still in their sector when on Oa.
It should be noted there are other Sectors beyond the 3600. Sector 3601 is considered outside the Guardians sphere of interests, and Green Lanterns are not permitted to travel in that region. It was formerly home to the Manhunters and their artificial world Biot. How sector 3601 is located in comparison with the 3600 sectors has yet to be explained.
Sector -1 represents the antimatter universe, specifically the planet Qward, center of that universe which lies on the underside of the multiverse.
A listing of sectors appears below. This list is obviously not complete as it only represents sectors that have been documented with either a named world, a member of either the Green Lantern Corps or Yellow Lantern Corps (Sinestro Corps), or some other historical significance.