Ecumene

The ecumene is the translated name for the Forerunner empire which existed over 100,000 years ago. It stretched across the galaxy and consisted of three million habitable planets. The political center of this empire was known as the capital, a massive structure containing multiple cities.

Known regions, systems and worlds

 * Capital
 * Meridian
 * Unidentified planet
 * Unidentified Forerunner planet
 * Orion complex
 * Ghibalb (rendered uninhabitable by several supernovae)
 * Bornstellar's homeworld
 * CE-10-2165
 * CE-10-2165-d
 * Cygnus system
 * New Jerusalem
 * DM-3-1123
 * DM-3-1123 b
 * Epsilon Eridani system
 * Reach
 * G617
 * Seaward
 * Korinth Prior system
 * Shield 0459
 * LP 656-38
 * LP 656-38 e
 * Procyon system
 * Arcadia
 * Sol system
 * Edom
 * Erde-Tyrene
 * Unidentified system
 * Janjur Qom (under Forerunner quarantine)
 * Urs System
 * Sanghelios
 * Zeta Doradus system
 * Onyx

Trivia
"Ecumene" describes the Earth as known by the classical civilizations of Greece and the Romans. This later became used by Christian denominations to refer to the general "Christian world".

List of appearances

 * Halo: Combat Evolved Anniversary
 * Terminals
 * The Forerunner Saga
 * Halo: Cryptum
 * Halo: Primordium