|There is more information available on this subject at Orion Arm on the English Wikipedia.|
The Orion Arm of the Galaxy teems with danger and opportunity.
The Orion Arm (full name: Orion-Cygnus Arm) is a spiral escalation of a minor spiral arm in the Milky Way galaxy; it is located near the galactic core and is part of the Sagittarius Arm (a major arm). The Sol system and Earth are within and amid the Orion 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 Orion Constellation.
Reign of the Forerunners
Creation of the Covenant
Re-Expansion of Humanity
- Main article: Domus Diaspora
in 2362 humanity had once again began to spread out to other systems, with the flight of the Odyssey. By 2490, UNSC colonial space encompassed over 800 planets and colonies ranging from small outposts to large, important military strongholds in the Orion Arm.
- Main article: Human-Covenant war