Onyx

Onyx, officially known to the UNSC as "XF-063" or Zeta Doradus IV, was a planet-sized Forerunner megastructure located in the Zeta Doradus system, and formerly the external component of the shield installation designated Shield 006. While it had a human-habitable surface and a terrestrial crust, these were supported by a colossal artificial structure. The artificial planet's ultimate purpose was to guard the entrance to the shield world proper, a Dyson sphere held in a miniature slipspace bubble. During the Great War, Onyx served as the headquarters of the SPARTAN-III program and was the location of the massive, three-sided Onyx Conflict in late 2552. At the conclusion of the battle, Onyx itself disintegrated when the artifical structures that made up the planet's "mantle" broke apart, only leaving the Dyson sphere in its core intact. After the disintegration of the artificial planet, the name "Onyx" has often been applied to the Dyson shell that remains in its stead, and can be regarded as the overall name for the shield installation, comprising both the planetary shell and the Dyson sphere.
Category:Daisy-023
Category:Planets
Category:Parallels
Category:Imperial Entanglements