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{{ | {{Era|Forerunner|Covenant|Human|UNSC|HCW|Post}} | ||
{{Wikipedia}} | {{Wikipedia}} | ||
[[File: | [[File:Orion Arm.png|thumb|250px|In this diagram, the '''Orion Arm''' is labeled "Local Spur". The position of the Solar System is indicated by the yellow dot.]] | ||
The '''Orion Arm''' | The '''Orion Arm''' is a spiral escalation of a minor spiral arm in the [[Milky Way]] galaxy that is approximately 3,500 light-years across 10,000 light-years in length. It is located near the galactic core and is part of the [[Wikipedia:Carina–Sagittarius Arm|Sagittarius Arm]] (a major arm). It is also referred to as the Local Arm, Local Spur, or the Orion Spur. It is named "Orion" due to its proximity to the [[Wikipedia:Orion (constellation)|Orion constellation]].<ref>[[Wikipedia:Orion Arm|'''Orion Arm''' on Wikipedia]]</ref> | ||
The [[Orion complex]], the center of the [[Forerunner]] [[ecumene]] and the location of their homeworld [[Ghibalb]], was located in the Orion Arm.<ref>'''[[Halo: Cryptum]]''', ''page 222''</ref> Most of the Orion Arm was under the control of the ecumene until the massive [[Forerunner-Flood war]]. The [[Flood]] absorbed numerous planetary systems in the Orion Arm. Following the activation of the [[Halo Array]] in [[100,000 BCE]], the surviving Forerunners left the Orion Arm.<ref>'''[[Halo Encyclopedia]]''', ''page 28''</ref> The [[Sol system]], [[Earth]] and [[Human colonies|humanity's colonial space]] are within the Orion Arm. During the [[Human-Covenant War]], [[Insurrectionist]]s and other independent human forces began creating settlements on planets on the Sagittarius side of the Orion Arm. These settlements were not sanctioned by the UNSC.<ref>'''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''', "[[The Impossible Life and the Possible Death of Preston J. Cole]]", ''page 340''</ref> Most of the homeworlds of the former client species of the [[Covenant]] were found in the Orion Arm. As the Covenant continued to grow, Covenant colonies continued to spread across the Orion Arm.<ref>'''Halo Encyclopedia''', ''page 119''</ref> | |||
Most of the Orion Arm was under the control of the ecumene until the massive [[Forerunner-Flood war]]. The [[Flood]] absorbed numerous planetary systems in the Orion Arm. Following the | |||
== | ==Sources== | ||
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== | ==See also== | ||
*[[Milky Way]] | |||
[[Category:Astronomy]] | [[Category:Astronomy]] |