The Unknown Regions, Unknown Space, Unknown Sector, or Unknown Territories was the collective term for all regions of the galaxy not formally charted; it differed from Wild Space in that Wild Space was usually minimally charted, but not fully explored. 2q2s2n
The Unknown Regions was broadly defined as areas not connected with the skein of reliable or well-known hyperspace routes spanning the galaxy, did not look to Republic before the Galactic Civil War. Beyond the region’s outer edge lay the hyperspace disturbance beyond the edge of the galaxy.
History
he reach of civilization extended at least nominally to the edge of the galactic disk—for instance, the territory of the Corporate Sector extended to the end of the Tingel Arm. The galactic disk and some satellite galaxies were mapped well enough that the omission of thirty-seven systems (including Kamino) from stellar charts were obvious gravitational anomalies, even when scanning from afar.
The large galactic volume designated as the “Unknown Regions” included uncharted areas in dense nebulae, globular clusters, and the galactic halos. 15% of the galaxy’s stellar mass was estimated to be contained within the Unknown Regions. Many governments repeatedly sent scouts into the Unknown Regions. General Wedge Antilles once remarked that “If you continue to map the Unknown Regions, you’ll have to call them something else.” During the early years of the Galactic Empire, a colonization corporation, Anawa, offered refuge to people by guiding them into the Unknown Regions where the corporation would istrate and police newly discovered habitable planets.
The Unknown Regions included a unique section of the galactic disk to the “galactic west” of Bakura, Bilbringi, and the Imperial Remnant. A web of hyperspace anomalies in this section known as “the tangle” impeded species such as the Chiss, Lugubraa, and others to combat its encroachments.
One hypothesis by a planet Ilum was reachable by Force-sensitive navigators.