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 [[File:Eye of Terror.JPG|thumb|300px|right|The '''Eye of Terror''']] [[File:Galaxy map Eye of Terror.jpg|thumb|350px|right|Location of the '''Eye of Terror''' in the [[Segmentum Obscurus]].]] The '''Eye of Terror''' (''Ocularis Terribus'') is a massive [[warp Warp rift]], where the [[warpWarp]] co-exists with [[Materium|real space]], the largest and most well-known in the galaxy. It is located at the edge of the galaxy, to the north and west of Terra, in the [[Segmentum Obscurus]].

The region of the Eye constitutes its own reality, existing within both the material universe and the warpWarp. Although planets and star systems exist within the Eye, the laws of reality no longer apply. Time is a meaningless concept, and matter, thought , and energy are indistinct.

The worlds within the Eye are known as [[Daemon World]]s , and each constitutes its own bizarre sub-reality. At the very centre center of the Eye lies the ''"byssos''"⁵, a hole in the fabric of reality through which raw Chaos energy pours out.⁶

The warp Warp and real-space are indistinct and intermixed within the Eye, and the whole region is a maelstrom of psychic energy, impossible to navigate through. Imperial ships avoid the area around the Eye for thousands of light -years. Ships travelling traveling too close to the Eye can be thrown far off-course - they can also be caught in temporal whirlpools which carry them backwards or forwards in time, or which trap them in limbo forever.

The [[warp Warp storm]]s that disturb the Eye are so intense that there is little point in even trying to steer a ship in a particular direction. The Chaos renegades simply launch their ships into the swirling energies of the warpWarp, trusting fortune to carry them to their enemies. This makes Chaos attacks so random, sudden and unpredictable, often occurring on worlds far from the Eye.¹

For the [[Chaos Space Marine|Traitor Legions]] , the Eye of Terror has been their exile, sanctuary , and safe haven for ten thousand years, from which they strike out at opportune, seemingly random, moments. The Eye is also sanctuary for the most heretical renegades, fugitives of Imperial justice , and traitors throughout the galaxy, and all are welcomed as fellow enemies of the Emperor and the Imperium.

The Eye of Terror is not a natural phenomenon. The Eye was created by the psychic shock wave that accompanied the birth of the fourth [[Chaos God]] , [[Slaanesh]] , during the [[Fall of the Eldar]].

The shock of the birth was so great it could not wholly be contained within the warpWarp, but spilled out into reality through the minds of the Eldar. Consequently , the Eye covers most of the region of the former Eldar Empire. Other zones of overlap were created, but the Eye is the most significant.¹

The Imperial world of [[Cadia]] lies nearest to the best-known stable gateway into the Eye; consequently , it is the most fortified and militarized world in the Imperium, the first line of defence defense against Chaos incursions into real space. It would seem that ships exit through this gateway far more often than they enter it.

==Sectors and subsectors Subsectors surrounding the Eye of Terror^2,3==Due to the constant threat of raids and incursions, the Imperium is present in one way or another in almost every system within 500 light -years of the Eye. This presence can range from small listening posts to heavily fortified frontier worlds.⁴*[[Belis Corona]] - (sectorSector) heart Heart of the Imperium's naval efforts and its docks are listed in von Heffman's ''Glorium Imperialis'' as one of the wonders of the Imperium. It is said that the entirety of ''Battlefleet Obscurus'' could dock in the vast orbital shipyards in orbit above Belis Corona.*[[Medusa]] - (subsectorSubsector) famous Famous as the homeworld of the [[Iron Hands]] chapterChapter. Unlike many other parts of the Eye, life is hard and uncivilised uncivilized barbarians cover many of the planets.*[[Scarus]] - (subsectorSubsector) the The most populous of all the sectors, with no less than six [[Hive World]]s which come together in trade and commerce and mutual defencedefense. There are also numerous temperate and [[agri world]]s to support the Hives. There are also two [[Forge World]]s which supply the vast Scarus Defence Defense Forces, Nysa Stromolo and Mordax Prime. It is said that 7/10 of Thracian Primaris, the capital of the sector, is covered in Hive cities.*[[Scelus]] (sectorSector)*[[Sentinel]] (sectorSector)*[[Belial IV]] (subsectorSubsector)*[[Cadian]] - (sectorSector) the The Cadian system System is possibly the most well -known system, with its 1st Imperial Guard Regiment having many successful campaigns and gaining wide recognition. Abaddon the Despoiler had attempted a campaign against the system; after he was repelled by Imperial forces , Cadia was made a fortress world against the sporadic attacks of forces in the Eye of Terror.*[[Chinchare]] (subsectorSubsector)*[[Nemesis]] (subsectorSubsector)*[[Caliban]] (subsectorSubsector)*[[Agripinaa]] (sectorSector)

*⁴:[[Codex: Chaos Space Marines (3rd Edition, 2nd Codex)|''Codex: Chaos Space Marines'' (3rd Edition, 2nd Codex)]], p.8*⁵:[[Eye of Terror (Novel)|''Eye of Terror'']] by [[Barrington J. Bayley]], chap.11*⁶:''[[Renegades]]'', p.49