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. The capital itself was located in the Orion complex, which was considered to be the center of the ecumene. This region of space was bordered by the Jat-Krula, often translated as the "Maginot Sphere", a defensive boundary consisting of millions of Line installations.

The Forerunners primarily divided the ecumene into themas, whose borders were marked by galactic magnetic fields, as well as segments known as margin arcs. Divisions of the ecumene were overseen by regional commandants. The territory of the ecumene encompassed not only the worlds of the Forerunners themselves, but also the various subject species that lived under their rule.

Known regions, systems and worlds

 * Absolute Record
 * Capital
 * Kan Pakko
 * Kelekos
 * Keth Sidon
 * Meridian
 * Draetheus system
 * Draetheus V
 * X50
 * Far Nomdagro
 * Nomdagro
 * Epoloch system
 * Requiem
 * Unidentified Forerunner planet
 * Orion complex
 * Ghibalb
 * 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
 * Path Kural
 * Procyon system
 * Arcadia
 * Secunda
 * Shaps system
 * Shaps III
 * Sol system
 * Edom
 * Erde-Tyrene
 * Unidentified system
 * Janjur Qom
 * Urs system
 * Sanghelios
 * Uthera Midgeerrd
 * Zeta Doradus system
 * Onyx
 * Shield World 006

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: Cryptum
 * Halo: Combat Evolved Anniversary
 * Terminals
 * Halo: Primordium
 * Halo: Silentium