Ecumene

The ecumene was 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
 * Unidentified planet
 * Unidentified Forerunner planet
 * Orion complex
 * Ghibalb (rendered uninhabitable by several supernovas)
 * Bornstellar's homeworld
 * CE-10-2165
 * CE-10-2165-d
 * DM-3-1123
 * DM-3-1123 b
 * Epsilon Eridani system
 * Reach
 * G617
 * Seaward
 * LP 656-38
 * LP 656-38 e
 * Sol system
 * Edom
 * Erde-Tyrene
 * Unidentified system
 * Janjur Qom (under Forerunner quarantine)
 * 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: Cryptum