Meridian

Meridian was a human colony world and a natural satellite of a gas giant. The city of Angoulême was located on the moon. A high concentration of Forerunner artifacts existed on Meridian; their presence was known to the Office of Naval Intelligence.

The moon held a temperate climate and fertile land. Prior to its glassing, Meridian had an impressive population and robust economy; mining was a known industry on the colony.

History
ONI Section Three had facilities on the moon, to which several SPARTAN-II augmentation chemical precursors were sent without Dr. Catherine Halsey's consent, likely in order to be researched for Project CHRYSANTHEMUM. Meridian was home to many Chalybs Defense Solutions facilities before they were abandoned sometime after the Fall of Reach. The moon was attacked sometime during the Human-Covenant War by the Covenant, though the UNSC successfully fended them off. The Covenant later returned to Meridian and glassed the moon in 2551.

During the battle a small Covenant team discovered a Luminary, which they delivered to the Prophet of Regret. The Luminary would later reveal the locations of the Halo rings, the Ark, and a slipspace portal to the Ark found on Earth.

List of appearances

 * Halo: Reach
 * Dr. Halsey's personal journal
 * Halo 2 Anniversary
 * Terminals
 * Halo 5: Guardians