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Outer Colonies

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The Outer Colonies are the human-colonized planets farthest from the Inner colonies such as Earth and Reach, with colonies founded after. Until the Human-Covenant war, disorder and rebellion were commonplace. By 2531, the majority of the Outer Colonies had been glassed by the Covenant.[1]


Beginning in 2525, Harvest was the first world to fall to the Covenant's genocidal wrath. In 2535, after ten years of war, most of the Outer Colonies had been lost, with Jericho VII being among the last major ones to fall. By 2552, though some Outer Colonies still remained in UNSC hands (mostly remote outposts), most were small and rather insignificant worlds. The few significant colonies still under UNSC control lived in constant fear of Covenant invasion. Some of the remaining colonies were bases for outlaws. By the time the Human-Covenant war ended on March 3, 2553, tensions in the remaining worlds had presumably died down significantly, however some colonies refused to negotiate with the UNSC and Venezia did not allow a UNSC ship to land, thus leading to the UNSC ships destruction, which then Captain Osman vowed to avenge.

Known systemsEdit

Eridanus system

Lambda Serpentis system

Chi Ceti system

Epsilon Indi System

  • Harvest - Planet glassed by the Covenant in 2525, retaken by UNSC after five year campaign

111 Tauri system

Alpha Aurigae System

Procyon System

  • Arcadia - Planet attacked unsuccessfully by the Covenant in 2531, but attacked again and destroyed in 2549

23 Librae System

Lambda Aurigae System

  • Roost - Planet with unknown status

XI Boötis A System - System still held by UNSC

Groombridge-1830 System - System attacked in 2530, but still held by UNSC

Beta Centauri - System with unknown status

Biko - Planet glassed by the Covenant on an unknown date before 2534

Coral - Planet glassed by the Covenant in September 2552

Dwarka - Planet presumed glassed by the Covenant, as all contact was lost

Emerald Cove - Planet with unknown status, abandoned by the UNSC in 2542

Hat Yai - Planet glassed by the Covenant in either 2528 or 2529.

Paradise Falls - Planet with unknown status

Sansar - Planet glassed by the Covenant, date unknown.



  1. Halo: First Strike, pages 98-99: And what did the citizens of the Outer Colonies think? Those who hadn't fled to remote outposts and hidden privateer bases weren't in any position to make trouble. The Covenant didn't take prisoners.

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