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Lyran Theta

Primary terrain


Points of interest
  • Mount Kijuma
  • The Hellpit
Native species
  • Cielotitan
Official language
Major exports
  • Natural Gas

Stratos was a roughly Earth-sized planet in the Lyran Theta system in the Outer Colonies, its surface dominated by perpetual seas of heavy compound gases. Despite this, the world was marginally habitable to humans by remaining in the oxygen-rich upper atmosphere, leading to limited settlement atop Stratos' abundant mountain ranges funded by gas mining concerns. A general evacuation was ordered in 2532 in anticipation of Covenant advancement through human space, but a number of colonists remained behind and went either undiscovered or ignored through the course of the Human-Covenant War. Corporate interests returned in 2554 as part of the post-war industrial boom with UNSC backing only to encounter resistance from the colonists who'd remained behind, and the UNSC Themistocles arrived to mediate the dispute. Afterward, Stratos became a popular refueling stop for mid-size human vessels traveling the rebuilding colonies.


Discovery and Settlement


UEG Return


Tremblay Range

Named for the captain of the BXR Mining Corporation's initial survey of the planet, the Tremblay Mountains are home to several of Stratos' first permanent settlements, selected for their access to natural air currents between the multiple peaks rising above the uninhabitable fog layer. The first scientific camps were replaced by helium and hydrogen collection plants on Braddock's Peak and Finnegan's Bluff, while the town of Hamziya was founded upon completed assembly of a prefabricated habitation block on a third peak. While all inhabited peaks include landing pad structures to enable passenger and cargo shuttles to ferry workmen and product to and from the collection facilities, only Hamziya incorporates its own modest spaceport, with facilities for mid-size vessels to transport larger shipments offworld to waiting slipspace-capable container ships.

Mount Kijuma

A lone tabletop mountain standing just a few hundred kilometers outside the Tremblay Range, Mount Kijuma was first inhabited semi-regularly by humans in 2533. As the populations remaining after the UNSC evacuation found the Tremblays would not sustain them without outside shipments of food and other supplies, agricultural plots were developed on Kijuma's relatively flat surface. With soil treatment using chemical compounds appropriated from the abandoned collection plants, root vegetables such as carrots and potatoes, greens like lettuce and cabbage, and other high-altitude crops have been cultivated reliably, with other produce grown inside makeshift greenhouses.

Sea of Fog

Named for the famous painting by artist Caspar Friedrich, the Sea of Fog is just one of many unbroken expanses of lowland over which rest permanent cloud layers. While little but lifeless rock is found below, the area's gentle air currents make the region home to numerous pods of cielotitan, which skim the fog layer's upper limits to filter chemical nutrients.

The Hellpit


Notes and References

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