Algolis
Astrographical
System:	Algol system
Orbiting:	Algol
Moon(s):	1
Physical
Societal
Species:	Human
Government:	Unified Earth Government

Algolis was a human colony in the Algol binary system. The planet possessed a single moon. Algolis housed a relatively small civilian population and was home to some of the Office of Naval Intelligence's research and development projects for prototype weapons, including the HRUNTING/YGGDRASIL Mark I ADS.

History

The Office of Naval Intelligence's Section Three had facilities on the planet, to which several SPARTAN-II augmentation chemical precursors were sent without Dr. Catherine Halsey's consent, likely in order to be researched for Project CHRYSANTHEMUM.

The colony was attacked by the Covenant at some time between 2548 and 2552, During the battle, the planet's civilians were evacuated while Marines from the UNSC Marine Corps of Engineers made a last stand against Covenant forces. The UNSC destroyer UNSC Heart of Midlothian was en route to the planet to secure the prototypical HRUNTING/YGGDRASIL powered armor from Weapons Research Facility T12A before the facility was attacked. All Covenant forces seemingly perished in the attack when a Marine sergeant known as "Ghost" detonated the powered armor's nuclear self-destruct device.

Algolis' ultimate fate is unknown, as it was not glassed during the battle. However, assuming that the entire human presence evacuated in the aftermath of the battle, the planet may have been spared from total destruction.

Notable residents

• Paul DeMarco

Gallery

• 

  Landscape on Algolis.

• 

  Facility T12A on the planet.

• 

  A UNSC frigate over Algolis.

Browse more images in this article's gallery page.

List of appearances

• Halo Legends
  • Prototype (First appearance)
• Halo: Evolutions
  • Midnight in the Heart of Midlothian (Mentioned only)
• Halo Wars 2
• Halo: Rise of Atriox