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This article is about the human Inner Colony. For the event documented by the Forerunners, see the Circumstance.


Epsilon Eridani system[1]


Epsilon Eridani[1]





Unified Earth Government


Circumstance is a human Inner Colony planet in the Epsilon Eridani system, famous for its universities and courts of justice.[2] Circumstance, just after Reach and Tribute, was one of the first planets colonized in the system by the Unified Earth Government.[3] One of the universities on the planet was Koletre-Browning University, which Doctor Catherine Halsey attended.[4] When the Epsilon Eridani system was invaded by the Covenant in the summer of 2552, most of the population centers on Circumstance were destroyed.[5] The planet was likely glassed by the Covenant at some point during the invasion.[1]

Kurt Trevelyan was born in the city of Mira on Circumstance in 2511, eventually growing up in Kuiper, before being abducted to the SPARTAN-II program as Kurt-051.[6] Carlo Hoya and his family immigrated to the planet after his homeworld of Asmara was glassed by the Covenant.[7]


In the Halo: Reach live-action short Spaceport, Circumstance is a destination listed at the Manassas Spaceport.

List of appearances[edit]


  1. ^ a b c Halo Encyclopedia, page 299 (2011)
  2. ^ Halo: Contact Harvest, page 62
  3. ^ Halo Waypoint: Tribute
  4. ^ Halo Waypoint: Doctor Catherine Halsey
  5. ^ Halo Waypoint: Fathom Station
  6. ^ Halo: Reach, Dr. Halsey's personal journal
  7. ^ Halo Waypoint: Carlo Hoya