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{{Cosmoria}}{{#description2:Megastructure in Aylathiya}}
{{!World_Infobox|title1=Eos|system=Eos System|day_length=One Month|radius=3 million kilometers|mass=0.5 M☉ (Most of which is from the disk. The Star has a mass of only 0.01 M☉)|age=As old as 500,000 years, potentially younger. The star itself, also called Eos, is 6.3 Billion years old.|climate=Varies|surface_gravity=1.1 G|surface_temperature=Varies|national_affiliation=[[File:GM.jpg|30px]] [[Greater Martial Consilium]]|major_species=Native Species
{{Infobox World
:[[Atlins]]
| title1=
:[[Kshi]]
| image1=EosDisk.png
:[[Kristals]]
| caption-image1=A to-scale map of Eos. The star in the center is 200,000 km across. The grey colors represent "dry land" insomuch as it could be stood on. The blue is liquid water, while the orange is molten metal.
:[[Lentomos]]
| image2=
Immigrated Species
| caption-image2=
:[[Farlas]]
| image3=
:[[Humans]]
| caption-image3=
:[[Molkor]]
| meta_info=
:[[Naidarans]]
| article_creator=Duodecillionaire
:[[Orcubor]]
| scope=[[Scope:Cosmoria]]
:[[Un'oit]]
| setting=[[Martial Space]]
:[[Ror Units]]|government_type=Constitutional Monarchy|population=9 Trillion|capital_city=[[Scipio]]|major_cities=*[[Kristadt]]
| author=Duodecillionaire
*[[Err]]
| location_info=
*[[Onaud]]
| realm=
| plane=
| galaxy=
| distance_from_galactic_center=0.5 Lightyears
| region=[[Aylathiya]]
| system=Astraeus
| designations=
| other_names=
| demonym=Eossian (uncommon)
| previous/unused_names=
| world_type=Disk
| world_class=Megastructure
| orbital_info=
| parent_body=Eos (Star)
| parent_body_type=Red Dwarf
| semimajor_axis=
| orbital_period=
| eccentricity=
| periapsis=
| apoapsis=
| inclination=0 Degrees
| orbital_position=
| neighboring_orbits=
| co-orbital_companions=
| irregularities=Irregularities in density and mass distribution contribute to a wobble over two hundred standard years.
| precession=
| properties=
| mass=*0.7 M☉
*0.18 M☉ for the star
| radius=Three Million Kilometers
| diameter=Six Million Kilometers
| density=5 g/cm<sup>3</sup>
| surface_gravity=0.9 — 1.1 Gs
| roche_limit=
| composition=*[[Resolute Bronze]]
*Carbon
*Silicon
*Beryllium
*Hydrogen
| core_size=
| surface_volatiles=
| average_temperature=15 Celsius
| maximum_local_temperature=400 Celsius
| minimum_local_temperature=-70 Celsius
| liquid_solvents=
| bodies_of_liquid=*Isochron Sea
*Sensen Sea (Water)
*Framboise Sea (Water)
*Etoile Sea (Water)
*Ka'a Sea (Water)
*Boreal Sea (Water)
*Platinum Sea (Water)
*Superboreal Sea (Brine)
*September Sea (Lead)
| liquid_bodies_composition=Water, Gallium, Lead, Ammonia, Benzene
| maximum_liquid_body_depth=1000 Km
| landmass_%_coverage=66%
| ice_cap_coverage=5%
| atmospheric_pressure=0.75 — 1.0 Bar
| atmospheric_composition=*Nitorgen
*Oxygen
*Carbon Dioxide
*Methane
*Argon
*Neon
*Hydrogen
*Ammonia
| albedo=
| age=*1.1 Million Years (Construction Begins)
*6.3 Billion Years (Star)
| rotation_period=15 Years
| axial_tilt=0 Degrees
| axial_precession=
| oblateness=
| solar_day=30 Standard Days
| geography=
| major_continents=*Zhiteng
*Ventemir
| subcontinents=
| geographic_regions=
| major_oceans=
| seas=
| volcanic_regions=
| highest_peak=
| deepest_point=
| deepest_submerged_location=
| major_rivers=
| mountain_ranges=
| largest_contiguous_landmass=
| primary_terrain=Toward the center, it is flat. As one travels outward, the terrain becomes increasingly variable.
| notable_islands=
| other_notable_locations=
| climate=
| average_cloud_coverage=52%
| average_wind_speed=20 Kmh
| average_annual_rainfall=> 1.4 ⋅ 10<sup>10</sup> Km<sup>3</sup>
| average_annual_snowfall=> 4.0⋅ 10<sup>8</sup> Km<sup>3</sup>
| climate_zones=*Icaran Ring
*Hadean Ring
*Common Ring
*Boreal Ring
| notable_climate_zones=
| major_persistent_storms=
| biomes=<br>
;Carbon Based
:Forests
:Rain Forests
:Desert
:Reefs
:Grassland
;Silicon Based
:Dendroid Forest
:Rock Field
;Benzene Based
:Hadean Fields
:Most biomes found on [[D'Naevium]]
;Combination
:Marred Biomes
:Oceans
:Hybrid Steppe
| hottest_region=Icaran Ring
| coldest_region=Zhiteng
| driest_region=
| wettest_region=
| capital_city=*[[Lyonesse]]
*[[Civestadt]]
*[[Paradigm]]
*[[Deungnamu]]
*[[Aztaya]]
| major_settlements=*[[Enyo]]
*[[Civese Great Cities]]
*[[Karaos]]
*[[Karlastadt]]
*[[Kristadt]]
*[[Paradigm]]
*[[Lowa]]
*[[Lowa]]
*[[Err]]
*[[Yakusoku]]|notable_residents=*[[Mars]]
| satellites=*[[Albedo]]
*[[Imperator|Imperator of the Greater Marital Consilium]]
*[[Eve]]
*[[Scintilla]]
*[[Leviathan]]
*[[Eosphoros]]
| ring_system=
*[[Delyatu]]|economic_vaule=Priceless|production_value=500 Quadrillion Carosi|image1=EosDisk.png|caption1=A to-scale map of Eos. The star in the center is 200,000 km across. The grey colors represent "dry land" insomuch as it could be stood on. The blue is liquid water while the orange is molten metal.|year_length=Eos wobbles over the course of several years, contributing to regular freezing and thawing of the areas farthest from its center.}}
| ring_system_width=
| ring_system_composition=
| ring_system_age=
| ring_system_origin=
| number_of_rings=
| number_of_moons=
| major_moons=
| minor_moons=
| number_of_artificial_satellites=Well over one billion
| notable_artificial_satellites=
| biosphere=
| native_life=
| native_flora=
| native_fauna=
| primary_native_solvent=
| imported_life=
| imported_flora=
| imported_fauna=
| estimated_number_of_species=1.2 · 10 <sup>12</sup>
| biosphere_origin=*Engineers from [[Hyperion]]
*[[Ma'eau]]
*Panspermia
| native_sapient_species=
*[[Atlins]]
*[[Templaros]]
*[[Kristals]]
*[[Hyperians]]
*[[Loresavt]]
*[[Civese]]
*[[Luxscions]]
| society_and_politics=Most of the population resides in large planet-sized cities.
| nations=br>
:[[File:QPA Flag.png|30px]] [[Quintet Payotari Association]]
:[[File:Nisrine Collective Flag.png|30px]] [[Nisrine Collective]]
:[[File:Tenshi2.png|30px]] [[Tianshi]]
:[[File:Amme.png|30px]] [[Kristallaus]]
:[[File:Enyo.png|30px]] [[Enyo]]
| international_groups=
:[[File:GM.jpg|30px]] [[Greater Martial Consilium]]
:[[File:CoB_Flag.png|30px]] [[Confederacy of Borealis]]
| inhabitant_species=
| population=9.7 Trillion
| general_development=High in cities, very low in rural areas
| official_languages=
| economy=
| gdp=5.5 · 10<sup>9</sup> Carosi
| currency=*Carosi
*Fex
*Entente Shares
*Civs
*Antis
| major_imports=Every product imaginable
| major_exports=*Processed Metals and Alloys
*Plastic/Polymers
*Weapons
*Spacecraft
*Agriculture
*Carbon Fiber and Graphene
*Pharmaceuticals
*Petroleum
*Tech
*Aircraft
*Ground Vehicles
*Radioactive Materials
| trade_partners=Nearly the entire universe
| affiliations=
| unique_local_resources=*Resolute Bronze
*Gallium Crude
*Naturally-Occurring Pharmaceuticals}}
{{Featured_In
|major_appearances=[[Tale:When Slugs Crawled out of the Sea]]
<br>
[[Tale:Love Lies Bleeding]]
}}


As far as stars go, Eos numbers among the smallest in Cosmoria. At just 200,000 km across, its habitable zone lies a mere two million kilometers from its surface. Under normal circumstances, this star would have a population somewhere in the billions, a mote on the scale of Cosmoria's civilizations. Eos, however, is not a normal star for surrounding it is a megastructure dwarfing nearly all others. This massive structure is a large flat disk orbiting this dwarf star. On this disk reside 9 trillion, environments unseen anywhere else, and some of the most influential empires in history.
As far as stars go, Eos numbers among the smallest in Cosmoria. At just 200,000 km across, its habitable zone lies a mere two million kilometers from its surface. Under normal circumstances, this star would have a population somewhere in the billions, a mote on the scale of Cosmoria's civilizations. Eos, however, is not a typical star, for surrounding it is a megastructure dwarfing all others. Three terrestrial worlds, hundreds of asteroids, and millions of stations orbit the disk itself. This massive construction is a large flat disk orbiting this dwarf star. On it resides nine trillion, environments unseen anywhere else, and some of the most influential empires in history.


The gateway from Aylathiya to wider Cosmoria, Eos lies in the center of [[Martial Space]]. An economic powerhouse: merchants, companies, and governments often use the large structure as a staging ground for their commerce of all kinds. Underneath the trade-friendly orderly surface is an eternal conflict as dozens of factions strive to take advantage of Eos' lucrative position. A gilded world, the guise only occasionally disappears. When it does disappear, however, it disappears with great force, leaving the rest of Cosmoria suffering generation-defining recessions.
Eos is the gateway to Aylathiya from elsewhere, lying in the center of [[Martial Space]]. An economic powerhouse: merchants, companies, and governments often use the large structure as a staging ground for commerce of all kinds. Underneath the trade-friendly orderly surface is an eternal conflict as dozens of factions strive to exploit Eos' lucrative position. A gilded world, the guise only occasionally disappears. When it does disappear, however, it disappears with great force, leaving the rest of Cosmoria suffering generation-defining recessions.


Nearly every group imaginable takes credit for the creation of Eos, from the [[Dotsk]] who have a reputation for building mega-structures, to nationalists in [[Florathel]] that claim only the [[Lareas Alliance]] could have created the structure. Historians on Eos sometimes credit its creation to [[Cosmic Commonwealth of Mages]], but the general consensus is that it was created by the nation of [[Hyperion]]. Regardless of the origin, it has continually existed for essentially all of recorded history, likely taking much of this time to construct. It is technically unfinished, as a large section of the structure has never been filled in.
Nearly every group imaginable takes credit for the creation of Eos, from the [[Dotsk]] who have a reputation for building megastructures, to nationalists in [[Florathel]] that claim only the [[Lareas Alliance]] could have created the structure. Historians on Eos sometimes credit its creation to others, but the consensus is that [[Hyperion]] built most of it. Regardless of the origin, it has continually existed for essentially all of recorded history, likely taking much of this time to construct. It is technically unfinished, as a large section remains unfilled.


The world remained a backwater on the galactic stage until the rise of the [[Triumvirate Civilization]] 40,000 years before the present day. This civilization's meteoric rise caused Eos' population to balloon to over 20 trillion by 80,000 CE. When the Triumvirate fractured as its three leaders went their separate ways, the resulting war caused its population to dip below one trillion, resulting in a galactic recession that has still technically not ended. From then, Eos has continually united and fractured until the modern day, currently existing united under the [[Greater Martial Consilium]].
The world remained a disunited backwater on the galactic stage until the rise of the [[Triumvirate Civilization]] 4,000 years before the present day. This civilization's meteoric rise caused Eos' population to balloon to over 20 trillion by 8,000 CE. When the Triumvirate fractured as its three leaders went their separate ways, the resulting war caused its population to dip below one trillion, resulting in a galactic recession that has still technically not ended. From then, Eos has continually united and fractured until the modern day, currently existing mostly united under the [[Greater Martial Consilium]].


=History=
== Physical ==
==Pre-History==
Embedded within Eos is a large mechanical apparatus of fractal complexity. The task of maintaining the disk against tidal forces, asteroid impacts, opportunists looking to harvest its materials, and other degradation, is one that requires more energy than the remarkably small star can provide. Eos has an entire ecosystem within and around it that serves to maintain the structural integrity of the disk. Powering this ecosystem is a vast sister-structure located around the nearby star of [[Gira Gira]].
The Eos system formed shortly after the emergence of Cosmoria 6.2 billion years before the present day. One of Cosmoria's lightest stars, Eos was a red dwarf with as many as five planets under its sway. The system was likely very compact, stretching at most seven million kilometers from the star's surface. The star likely never hosted native life.


=== Structure ===
===Construction===
Eos, the disk, is about 1.1 million years old, making it by far the oldest extant megastructure in Cosmoria. The original disk, a thin band of living area scarcely one thousand kilometers wide, was a fundamentally different megastructure. With gravity powered by rotation and the liveable area facing the central star, this ancient ring had about a millionth of its current surface area and weighed about as much as a large terrestrial planet.
Eos is composed of a substance called [[Resolute Bronze]], a gold-brown-colored alloy widely renowned for its material strength. While most certainly not the strongest material known, it is cheaper than graphene by just enough to sacrifice material strength for the cheaper price. As such, structures like Eos have a maximum theoretical diameter of a little over four million kilometers, about as wide as the structure is currently.


This ring, called '''Ur-Phaethon''', was made up of silicon polymers interspersed with carbon fiber. It may have been grown instead of built as microscale fossils of bacteria and fungi permeated the ring. The next ring orbited much farther away and was thus larger; its name was '''Cycnus'''. The next rings, smaller and closer to the star, were '''Sthenelus''', '''Eridanos''', '''Clymene''', '''Merope''', '''Cephalus''', and '''Cinyras'''. Each ring had a different inclination so as to avoid shading the others. As many as twenty trillion could have called these rings home. The [[Moridian High Command]] began constructing Aubade shortly after completing the seven rings.
Eos is three million kilometers in radius and has a surface area equal to 25 trillion square kilometers. Embedded within this structure are a series of large orbital rings with a thickness of, on average, 1150 kilometers. Within them, small charged black holes race around the star at relativistic speeds, their momentum cancelling the force of gravity to prevent the disk from collapsing.


===Expansion===
The disk is not quite flat, it gently angles upwards to form a concave structure. The reason for this is simple; it keeps gravity uniform and "downwards" across the whole of the disk. Were it perfectly flat, gravity would pull towards the center, straining the orbital rings as well as making life impossible on its surface. The disk thickens as the distance to the star increases. It has 0.01% grade, resulting in only an imperceptible slope across its surface. Minute variations in the thickness results in mountains, lakes, flats, and oceans. Overall, Eos is very smooth.
The ancient king, '''Erekada Vili'ioux Ma'eau''', is said to have been wealthy beyond imagination. With armies of machines at his disposal, absolute power over [[Hyperion|Hyperion's]] economy, and support from the [[Lareas Alliance]], Erekada began construction on the disk of Eos. The first step was to repurpose the existing rings. Oral tradition from the [[Kristals]], descendants of the Hyperian people, claims that taking the rings was a bloody process. [[Albedo]], Eos' largest extant satellite, has evidence of this conflict, namely, a sudden increase in craters in the geologic record. Once secured, Erekada's armies heated and warped the rings into tubes.


Heavier than most stars, it is almost impossible for Eos' mass to have been harvested through normal means. There are several hypotheses, from a contract with an immensely powerful [[Spirits (Cosmoria)|Spirit]] to a mechanism that could convert [[Thaumaturgy (Cosmoria)|Thaumic Energy]] into physical matter. The most well-supported hypothesis is that Erekada was an [[Esoteric Thaumaturgy|esoteric magus]]. These magi can exploit Cosmoria's [[Planes (Cosmoria)|planes]] to harness the concept they represent. If there was a plane of [[Resolute Bronze]], Erekada could have used it to gather unlimited construction material. At such a scale, Erakada would need to be the most potent esoteric magus in history, so he likely had thousands of assistants.
=== Climatic Regions ===


Eos' interior support structure was first. The [[Eos#Phaethon|Phaethon]] system replaced the Ur-Phaethon ring next. This massive generator supplied Erakada's machines with their needed energy. These mechanical construction workers, with little in the way of electric parts, derived power from a tightly wound spring. Erakada created the [[Loresavt]] to handle logistics, manual labor, and planning. To cover Eos' surface in a natural layer, the Loresavt decided to dismantle several planets. The planet of [[Scintilla]] represents the remains of construction and is composed of impure Resolute Bronze. [[Delyatu]], a dubiously intelligent mechanical construct from this period, claims to be Erakada's reanimated corpse.
==== The Icaran Ring ====
A mere one million kilometers away from its star lies in the innermost region of Eos. Carbon-based life of any kind simply perish in these hellish conditions, becoming a mist within moments. In this region, seas of lead are commonplace, with an entire ecosystem of this lead-based life inhabiting its seas. As the lead evaporates, at a slow rate give how close it is to its melting point, the toxic clouds interact with Eos' oxygen-rich atmosphere, creating particles of lead-oxide which can travel far across the disk. Drifts of the snow-like substance are common much further into the disk, but if they fall back into the Icaran Ring, they will degrade into liquid lead once more.


The fall of the Lareas Alliance and Hyperion in 189,442 BCE did a number on Eos. The [[The Swarm]] of [[Advaris]] devastated galactic civilization. Eos' automated defenses warded off most of the damage, however. Loresavt armies repaired, defended, and even continued construction on the disk. Sections completed during this period are composed of carbon fiber instead of resolute bronze. Stress from the differences in tensile strength caused many of Eos' surface features. Most mountain ranges and ocean basins formed over the next 100,000 years. Small populations remained on Eos.
Silicon dominants the soil of this region, most carbon quickly becomes carbon-dioxide in these conditions. The occasional solar flare from the star can liquefy large portions of the soil, leaving in its wake nearly-pure quartz crystal which cools into massive structures. Large fields of these crystals are often the only feature for hundreds of kilometers. The other structure to break up the flat landscape are massive wind turbines, capable of converting the powerful wind currents of Eos into energy. Winds in the Icaran Ring rarely drop below 50 kilometers per hour, requiring life such as the [[Atlins]] to seek shelter in caves or behind large walls. The air is choked with smog, particulates, and other impurities, while also having nearly twice the pressure as it does towards the edge of the disk.


==Ancient History==
For the past 50,000 years, large mirrors have existed above Eos to concentrate light onto [[Orcubor]] settlements, creating regions of over 2000 degrees Celsius. These hellish regions threat the very structural integrity of the disk, requiring extensive cooling systems maintained by various governments. The most extreme of Cosmoria's life, aluminum-based creatures made mostly out of liquid quartz, inhabit these furnace-like conditions.
===Foundations===
[[Paradigm]] was the first modern city on Eos. Then called '''R'Yvv''', Paradigm represented the entirety of civilization in [[Aylathiya]]. Its founding [[Naidarans]] fought countless wars with native [[Kristals]] over their territory. Neither species saw the other as intelligent and, without modern decoding techniques, communication was impossible. In 2,000 BCE, Kristals represented the vast majority of the population. Minorities, such as Naidarans and Loresavt, each accounted for ten percent. During this era, Paradigm rose and fell three times. The Kristals nearly annihilated the Naidarans on a handful of occasions. The only thing that prevented total Kristal victory was the Naidaran "Hero." Every century a Hero emerged amongst the Naidarans who drove back the hoards of Kristals. Ancient murals and slabs describe heroes as "cold to the touch," "invulnerable," and "holders of lightning." These impressive abilities suggest the first known use of [[Invocative Thaumaturgy]].


The [[Civese]] were an ultra-rare species that only recently emerged. Occupying less than a hundred square kilometers of land, less than three hundred called Eos home. As they slowly developed agriculture, their population increased by thousands of times. They resided near the modern site of [[Civestadt]]. Another primitive species, the [[Arkhosians]], originated on [[Sakijast]], [[Matoehdahn]], only to have traveled to Eos during the reign of the Lareas ALliance. Unrecognizable from their original state, they remained in isolated villages during this period. The [[Atlins]] remained primitive throughout this period. Made of plasma, it was difficult for them to break out of their ecological niche.
==== The Hadean Ring ====
Further out lies an area that is too hot for liquid water to exist but also too cold for the seas of lead. The only life in this area are organisms capable of weathering its intense extremes. Dotted by the occasional oasis, not of water but of gallium metal, clouds of this material are a rarity. Interaction with air and water vapor from further out causes the gallium to oxidize, creating a thin crust above the lakes of metal. Beneath the seal, low-energy ecosystems are occasionally present.


===The First Angel===
Life from [[D'Naevium]] is perfectly adapted for this environment and exists in isolated communities around the gallium deposits. The animals learned to punch through the thin sheets to drink, while also becoming far more resistant to wounds as their injuries become self-cauterizing. With ferocious abandon, the largest predators know no fear, throwing themselves at anything they can. Vehicles passing through the region are prime targets, forcing travelers to use hyper-sonic trains that not even multi-ton predators could survive an impact with. The trains are usually so large that little could obstruct their path.


===The Magi Return===
Far from the pools of gallium, the only thing to disrupt the landscape are train-tracks, wreckage from an untold number of battles, scavengers, and autonomous machines poking through the igneous soil. Large fields of solar panels are occasionally used to power remote facilities and factories while the occasional settlement, like a space-station for every species except [[Ror Units]], are usually located near to the rail lines. The atmosphere is mostly pure compared to the Icaran Ring.
As centuries went by, many Naidaran heroes lived and died, villagers congregated and scattered, and monuments rose and fell. Seven hundred years after Paradigm's founding, its people developed the ultimate cultural advancement, the ability for anyone to practice Invocative Thaumaturgy. The ancient hero, '''Director C-Tealkalich''', spread his abilities amongst his fellow Naidarans. At once, they pushed back most Kristals. While never quite uniting Eos, they became its dominant power by the year 1000. By then, they called themselves the [[Cosmic Commonwealth of Magi]].


A small wave of refugees landed on Eos in 1987 CE. Fleeing the collapse of [[Karith the Accursed|Karith the Accursed's]] empire, the [[Kalar]] refugees numbered only one thousand. Most did not make the perilous journey this deep into Aylathiya, let alone the ancient megastructure in its center. Eleven further waves brought the Kalar population to 100,000. Despite bringing advanced technology, they lacked the extensive port infrastructure to repair their crashed ships. Kalar civilization on Eos depended on what little industry they brought with them. 3D printers and solar forges represented the bulk of their technology. After just a century, their society decayed beyond functioning.
==== The Common Ring ====
The Common Ring is the largest by area and the most heavily-populated. Beginning two-million kilometers from Eos, the ring is dominated by vast seas representing the majority of the water in Martial Space. Remnants of an ancient molecular nebula explain where the resources for the region came from. From the nearly-boiling seas of the interior to the periodically-frozen seas of the edge, the Common Ring is filled with life of all sorts. Every intelligent species, save for the thermophilic Orcubor and Atlins, have large populations in this region.


The Kristals nearly destroyed all Kalar settlements; were it not for intervention by the Cosmic Commonwealth, they would have gone extinct after only 50 years. Communication was slow, but rough approximations of sounds were sufficient. While a handful of the original refugees were alive, most were born on Eos and thus gave an inaccurate account of their time in space. Tales of deities, mountain-eating monsters, and "people beyond the sky" became even more embellished due to analogies, metaphors, and untranslatable words. The Commonwealth immediately attempted to investigate their stories. However, without the requisite technological development, they were trapped on their homeworld.
As one moves from the center of the ring to the edge, the variation in the surface increases. By the time one gets to the common ring, large mountain ranges and valleys dominate the landscape. As for visual variety, the Common Ring reigns supreme as vast forests cover much of it. The forests battle against the massive carbon-dioxide production of not just the Icaran Ring but the intense industry of the region. If a species is carbon-based and can tolerate water, chances are that a population lives on Eos. The interaction between trillions of bacterial species creates a unique ecosystem in which nearly all forms of life can survive. Governments throughout history have had to tailor new viruses to combat dangerous or disruptive populations of bacteria with limited success.


After further centuries, the Commonwealth's most devoted Magi would elevate to the status of [[Paladins|Paladin]]. This ultra-devoted practitioner sat at the apex of Invocative Thaumaturgy. These Paladins wielded tremendous power that surpassed that of even the ancient heroes. For the first time, Naidarans gained the upper hand in the perpetual war against the Kristals. Like removing a predator from an ecosystem, Naidarans, Civese, Kalar, and Loresavt populations greatly increased.
A very small percentage of the Common Ring is inhabited despite its favorable conditions. Its sheer size means that urban areas account for less than a percent of a percent of its surface. The areas between major settlements are truly untamed wildernesses punctured only by the occasional village, of which there are many. There are currently 40 million settlements containing 100 or more inhabitants within the Common Ring. Like the stars in the skies above them, the settlements are spaced-out by vast distances. Many are unaware of the civilization around them and have no access to it.


==== The Boreal Ring ====
===Leaving the Surface===
The Cosmic Commonwealth perfected space travel nearly a century after it was founded. The first spacefarers used space planes to travel anywhere on Eos within three weeks. Large boosters brought the plane to the correct height only for it to glide for most of the journey. Most of these trips were one-way. Further advances allowed for them to remain airborne throughout the whole trip, cheapening cost but requiring cargo to be ejected from high in the air. Colonies on the far side of the disk were easy to keep in line; any wavering in loyalty would mean cutting off resource deliveries. The first challenge was making them profitable. It was difficult to return resources over reasonable periods.
The Boreal Ring, named for the [[Boreal Anemoi Company]] and the [[Boreal Empire]] that replaced it, is the newest region as well as the coldest. The innermost area allows for liquid water for brief portions of the year, but most of it remains frozen. Lightly populated, the region is nonetheless home to large amounts of energy-intensive industry such as element synthesis and asteroid refinery. These islands of heat in the otherwise frozen wasteland create wet urban environments. Straying too far from these cities leaves one in endless lifeless snowbanks.


Given Eos' high escape velocity, it took very long to leave it altogether. The first Naidarans to leave spent weeks in orbit. Climbing even higher, to Eos' satellites, yielded little. The first moon, Albedo, was a barren wasteland of glaciers punctuated by small oases of volcanic activity. Scintilla and Eosphoros were no better; both worlds barely clung to toxic atmospheres. Interstellar travel was still out of the question. With population growth leveling and increasing automation, the drive to expand dwindled. Eos was effectively infinite, held all the resources a civilization could need, and was rapidly developing.
Rail in the Boreal Ring is limited to large freight trains that occasionally have areas reserved for passengers. They are powered by super-conducting lines embedded in the rails, the cold temperature allowing for cheap superconductors to handle a job usually reserved for the highest-end materials. The newest and largest space-ports on Eos are embedded into this region and the byproducts from constant use of rocket engines, industry, and other activities create toxic pools that would normally evaporate or break down at higher temperatures.


The Commonwealth found the needed motivation in 598 CE when [[Dotsk]] explorers landed on Eos. Unlike previous species, however, they did not leave behind a settlement. The Dotsk were far ahead of any civilization on Eos, but there was one thing that it had that they wanted, [[Resolute Bronze]]. The Dotsk homeland, called [[The Array]], desired a strong ally and began trading for the material rather than risk a war. By 805 CE, the Dotsk figured out how to synthesize the valuable metal, but Eos now had technological parity with them. Commonwealth envoys explored all of Cosmoria, importing promising paladins from throughout. Already the cosmopolitan world, Eos' diversity only increased. R'Yvv, now called '''Zero'Yvv''', had a population of 50 billion and over fifteen different species.
=== Seasonal Climate ===
Eos has had a substantial wobble for all of recorded history. If the star were stationary, this would create little to no variance; however, the star effectively orbits the "barycenter" it shares with the disk. This creates a bobbing motion that results in days and nights on the megastructure. Combined with the wobbling of the disk, there are periods, called "Eos Years" over which the portions of the disk receive more or less sunlight. Additionally, in the coolest part of the year, the light received it much less direct. The seasonal climate matters far less in the blazing Icaran ring than it does in the frigid Boreal Ring. At the farthest reaches of the disk, the variation becomes extreme, varying by over 200 degrees Celsius (about -200 to a little below freezing).


===The Overlords===
Influence by nearby stars and planets also cause the disk to flex very slightly. This flexing and relaxing takes place over six hundred years and is again most influential for the Boreal region than anywhere else. It greatly changes how much sunlight an area is exposed to during the "summer" periods, leading to the Boreal Region sometimes flowering in rare events simply called "Vernal Events," attract tourism but also greatly inhibit industry.
An [[Overlords|Overlord]] is a being of immense power that qualifies as a civilization in its own right. Whether an ultra-powerful Magi, an artificial superintelligence, or a hivemind organism, these singletons act as individuals on the galactic stage. The Commonwealth observed several naturally occurring Overlords, such as [[Laborosoarchod]]. At first, they thought little of these ultra-powerful entities. The unrivaled paladin army was thought to be invincible. Over one billion of the finest paladins in the universe, led by generals of legendary devotion called '''Saints''', were impossible to destroy from the outside.


The fall came from within. The strongest saint at the time, [[H-Araimaluk]], discovered a new form of [[Thaumaturgy]], now called [[Thaumaturgy#Meridian_Thaumaturgy|Meridian Thaumaturgy]]. This practice is slightly different from Invocative Thaumaturgy—it is centered on devotion to an intelligent being rather than a concept. H-Araimaluk abandoned the Commonwealth to focus on what he called [[The Administrator|The Orrery God]]. After offering his god every state secret, a power struggle emerged amongst saints seeking to replace him. The resulting civil conflict tore apart the Commonwealth's large army, plunging Eos into chaos.
=== Orbiting Bodies ===
Eos, in particular the disk-star barycenter, is a fairly massive object and thus possesses a number of orbiting bodies. There is evidence of a heavily-depleted asteroid belt that once existed around the star that may have supplied a portion of the material that makes up Eos. In addition to natural bodies, there are gigatons of material placed into orbit around the body every year, much of it becoming space junk. The oldest material orbiting Eos dates back over five million years.


The following centuries brought increasingly advanced technology and a sudden increase in the number of [[Spirits]] near Eos. While most spirits have no willpower, meaning they pose no threat, spirits with even a modicum of self-interest can pose a great threat. Cosmoria's peoples warred against these dangerous entities, in particular the spirit-like Naidarans. In their war against the spirits, The Array created [[Belshazzar]]. This system took advantage of a peculiar trait of the Dotsk—spirits can possess their bodies. Every time a spirit possessed a Dotsk, surveillance systems allowed Belshazzar to apprehend the unfortunate individual. The possessed ended up confined in large prisons for study. With a stockpile of weaponizable spirits, the Array rapidly grew in power. Eos' disunited cities could not resist its conquest.
==== Albedo ====
[[Albedo]] is the most massive natural satellite of Eos. It seems to have been left alone during the construction of the disk. Albedo orbits just barely beyond the disk at 5.1 million kilometers from the star. Its orbit is inclined by 17 degrees relative to the disk as well. It is the brightest object in the night skies of Eos due to its incredibly high Albedo, hence its name. Consequently, it is very cold on the world. It is covered in a layer of ice; however, islands of thriving ecosystem are found in volcanic regions. geothermal energy heats most of the cities currently on Albedo. It was the first world colonized by [[Humans]] outside of their home system.


The Belshazzar system proved too effective. With Dotsk sent throughout Cosmoria to collect spirits, increasingly powerful and intelligent beings ended up under Belshazzar's watch. Long before the Dotsk realized, spirits such as [[Nabopolassar]] and [[Khrumvasaxterit'shymm]] took advantage of this convenient spiritual army. The moment Belshazzar captured the fabled Orrery God, the accumulated spirit army burst forth, overwhelming Belshazzar's systems. The resulting army became the [[Oberherr League]], Eos' new rulers.
==== Hikari ====
[[Hikari]] orbits at about 6.5 million kilometers away from its star. The planet has a very low surface gravity and density, causing it to have a very small population. By mass, it is over twenty-five percent copper. Most scientists believe the planet to be a byproduct of the construction of Eos. Its inhabitants have been slowly eating away at the planet, converting it into raw materials to be sold. Much of the planet has been processed by the industries in the Boreal Ring.


The Oberherr League is less a state and more a period of history. A kratocracy, the League cycled through dozens of leaders, treaties, and systems. The people of Eos were pawns in the endless machinations of this new spiritual order. Spirit armies, taking on the form of millions of possessed Dotsk, became a horrifying enemy that decreased Eos' population. The disk gained a reputation as a ruthless place to be avoided at all costs.
==== Eosphoros ====
[[Eosphoros]] is a large terrestrial planet located 10 million kilometers away from the star. A [[Hedonist World]], Eosphoros is home to a large number of ruins from the ancient [[Second Aeternal Society]]. Its [[Cherubic Sentries|ancient guardians]] have never allowed an external nation, save for the [[Triumvirate Civilization]], to conquer it. Eosphoros has a thick atmosphere and rich geothermal activity that keeps it warm. It seems to have no intelligent life on it, its inhabitants having evolved into beasts of all kinds, including [[Aeternapes]].


=== Dark Side of Eos ===
===The Second Angel===
Reverse the highly populated side of the disk is a sparsely populated region poetically called the "dark side." At different points in history, it was just as habitable as the "light side," however, radiation from the neutron star [[Demiurge]] makes it uninhabitable in the present. With only a population of three billion calling this side home, the opposite side is, both politically and economically, the mirror image of the main side. Nations on Eos simply control the territory they possess on the opposed side as well.


=Physical=
=== Composition ===
Embedded within Eos is a large mechanical apparatus of fractal complexity. The task of maintaining the disk against tidal forces, asteroid impacts, opportunists looking to harvest its materials, and other degradation, requires more energy than the remarkably small star can provide. Eos has an entire ecosystem within and around it that serves to maintain its structural integrity. Powering this ecosystem is a vast sister structure located around the nearby star of [[Gira Gira]]. Called [[Eos#Phaethon|Phaethon]], the system has successfully defended it for longer than modern civilization has existed.
Beyond the internal structure of resolute bronze, Eos is composed of whichever substance was cheapest for the civilization building the section. Some areas are composed of lithium and beryllium, suggesting a civilization capable of large-scale fusion without much use for these materials. Many areas are composed of heavier metals; asteroids were commonly turned into a liquid and used as material for 3D printers. Silicates are common as well. There is evidence that entire planets have been used as feed-stock for some of the oldest areas.


==Structure==
The most recently-built areas, built by the [[Dominion of Astraeus]], are composed mostly of an iron-slilicate mixture. It was created by importing energy from [[Sagittarium]] to turn an orbiting dwarf planet, '''Aura''', into raw materials for the expansion of the disk. While most of the disk is solid, filled with an ultra-low-density substance that maintains rigidity despite being mostly vacuum, many of the newest areas have yet to have been filled in, creating a slightly diagonal pull of gravity in those regions.
Eos is composed of [[Resolute Bronze]], a gold-brown-colored alloy widely renowned for its material strength. Structures like Eos have a maximum theoretical radius of over four million kilometers. Eos has a radius of three million kilometers and a surface area equal to 25 trillion square kilometers. Embedded within this structure are a series of large orbital rings with a thickness of, on average, 1150 kilometers. Within them, small charged black holes race around the star at relativistic speeds, their momentum canceling the force of gravity that would otherwise collapse the disk.


Eos is not quite flat; it gently angles upwards at 0.01% grade. The resulting bowl shape keeps gravity uniform and air contained. Were it perfectly flat, gravity would pull towards the center, straining the orbital rings and making life impossible on its surface. The structure thickens as the distance to the star increases. Small variations in the thickness results in mountains, lakes, flats, and oceans. Overall, Eos is very smooth, however.
== Biosphere ==
Across Eos, there exist thousands of unique biomes, ecosystems, and organisms. Since life from throughout Cosmoria, even from as far as [[Florathel]]. The Biosphere occupies nearly all of Eos, from the space around it which hosts large amounts of [[Spaceborne Life]] to vacuum-tolerant microbes that reside within its interior. The vast majority of biomass exists on Eos' surface, in particular in the Common Ring which accounts for slightly under 90% of its total biomass. Consequently, water-based life is the most common life on Eos.


==Climatic Regions==
[[Ma'eau]] created most of the life on Eos, the species developed with intention to fulfill specific roles in ecosystems. The entity itself is deeply-embedded into Eos' biosphere and works constantly to maintain its fragile balance. Other forms of life, such as life from [[D'Naevium]], remains isolated and thus rarely interactions with most of the other life.
===The Icaran Ring===
A mere one million kilometers away from its star lies in the innermost region of Eos. Carbon-based life of any kind cannot last long in these hellish conditions. Water becomes mist within moments. In this region, seas of molten lead are commonplace, with an entire ecosystem of this lead-based life inhabiting its seas. As the lead evaporates, at a slow rate given how close it is to its melting point, the toxic clouds interact with Eos' oxygen-rich atmosphere, creating particles of lead oxide that can travel far across the disk. Drifts of the snow-like substance are common much farther in, but if they fall back into the Icaran Ring, they will degrade into liquid lead once more.


Silicon dominates the soil of this region, and most carbon quickly becomes carbon dioxide here. The occasional solar flare from the star can liquefy large portions of the soil, leaving in its wake large fields of quartz crystals that can stretch for thousands of kilometers. The other structures to break up the flat landscape are massive wind turbines, capable of converting the powerful wind currents of Eos into energy. Winds in the Icaran Ring rarely drop below 50 kilometers per hour, requiring life such as the [[Atlins]] to seek shelter in caves or behind large walls. The air is choked with smog, particulates, and other impurities, while also having nearly twice the pressure as it does towards the edge of the disk.
===Marred Regions===
A Marred Region is a region of Eos created by Ma'eau during a period of mental dissociation experienced by the entity from 964,000 BCE - 303,888 BCE. Often called "Ma'eau's Civil War" as the various wills contained within it warred against one another. During this period, Ma'eau had a difficult time creating new organisms or guiding their evolution, leading to an increase in genetic diversity or the propagation of undesirable mutations.


For the past 5000 years, large mirrors have existed above Eos to concentrate light onto [[Orcubor]] settlements, creating regions of over 2000 degrees Celsius. These hellish regions threaten the very structural integrity of the disk, requiring extensive cooling systems maintained by various governments. The most extreme of Cosmoria's life, aluminum-based creatures made of liquid quartz, inhabit these furnace-like conditions.
Standing in a marred region, one would usually see little of note. In the majority of these areas, bizarre microbes reduced the soil into a slurry of acidic compounds, resulting in a muddy wasteland punctuated by the occasional pool of acid. Deeper into these ecosystems, where these microbes act as the basis of the ecosystem, one would have hardly anywhere to stand. In most of these regions, deep pools of sulfuric acid create swamp-like conditions throughout much of the biome.


== Phaethon ==
===The Hadean Ring===
Further out lies an area that is too hot for liquid water to exist but too cold for seas of lead. The only life in this area are organisms capable of weathering its barren flats. Dotted by the occasional oasis, not of water but of gallium metal, clouds of any sort are rare. Interaction with air and water vapor from further out causes the gallium to oxidize, creating a thin crust above the lakes of metal. Low-energy ecosystems exist in these rare oases.
To maintain the vast structure of Eos requires far more energy than the small star could ever hope to provide. While power draw from the star is practiced in the innermost regions, most areas require imported energy. Without robust supply chains that can provide all the needed antimatter, industry on Eos crawls to a halt. Those who built Eos were also aware of this glaring problem, the disk requiring nearly ten times more energy than Eos can provide just to stay together.


Life from [[D'Naevium]] is perfectly adapted to this environment and exists in isolated communities around the gallium deposits. The animals learned to punch through the thin sheets to drink. They also became far more resistant to wounds. Their injuries are self-cauterizing since their gallium blood immediately hardens. With ferocious abandon, the largest predators know no fear, throwing themselves at anything they can. Vehicles passing through the region are prime targets.
This is where '''Phaethon''' comes in, the system that powers Eos. A decentralized network of quantum computers, servers, and autonomous craft, Phaethon tirelessly works to maintain the orbital rings and the infrastructure powering them. The construct has demonstrated to be somewhat intelligent. Occasionally, its drones will find asteroids or other free material to repair Eos, always careful to never take any obviously artificial material.


Far from the pools of gallium, the only thing to disrupt the landscape is train tracks, wreckage from an untold number of battles, scavengers, and autonomous machines poking through the igneous soil. Large fields of solar panels power remote facilities and factories. The occasional settlement, pressurized like a space station for every species except [[Ror Units]], is usually near the rail lines. The atmosphere is pure compared to the Icaran Ring, but still not safe to breathe for most.
=== Structure ===
Phaethon is made up of two twin rings, the outermost ring of Eos which is a counter-rotating generator, and a much larger rotating ring orbiting within Gira Gira's atmosphere. The ring around Gira Gira gathers and remotely transmits power to the ring on Eos. There are numerous subterranean factories on Gira Gira's largest planet, [[Taek]], which are most likely responsible for the creation of the various craft Phaethon commands. Something notable about these factories is that they are nearly entirely mechanical, with few electronic devices present. A central line shaft is responsible for the power supplied to each of machines. The factory has never been observed to work, but it is frequented by some of Phaethon's drones.


===The Common Ring===
The drones themselves are similar to the factory and seem to be powered by the gradual release of a spring. It is unclear how they power their sensors or even how they are capable of such complex actions as they are each made up of billions to trillions of often microscopic gears. They contain thousands of smaller machines within them responsible for internal maintenance. Their springs need to be rewound every so often, likely at substations similar to the factory. They are made up of the same tungsten-titanium alloy as the ring. Those that are capable of space travel make use of [[Thaumic Drive|Thaumic Drives]] to pick up speed.
The Common Ring is the largest by area and the most heavily populated. Beginning two million kilometers from Eos, vast seas of water dominate the ring. Remnants of an ancient molecular nebula explain where the resources for the oceans came from. From the nearly-boiling seas of the interior to the periodically frozen seas of the edge, the Common Ring hosts life of all sorts.


As one moves from the center of the ring to the edge, the variation in the surface increases. By the Common Ring, large mountain ranges and valleys dominate the landscape. As for visual variety, the Common Ring reigns supreme as vast forests cover much of it. Forests battle against the massive carbon dioxide production of not just the Icaran Ring but the intense industry of its inhabitants. If a species is carbon-based and can tolerate water, chances are that a population lives in the Common Ring. The interaction between trillions of bacterial species creates a unique ecosystem in which nearly all lifeforms can survive.
On Eos, capturing or otherwise interfering with these drones, even if they cause damage to property, is a capital offense. This is obviously to protect the structural integrity of the structure but to also learn about them. They seem to be somewhat sentient as cameras or sensors placed on them are inevitably removed. There are most likely several factories or substations located within Eos, but internal exploration of the disk is impossible. Boring into Eos is incredibly difficult, Phaethon usually forcibly stops any who try by sending strong electromagnetic pulses at the offending borers. Thus, Phaethon's structure has been shrouded in mystery, the construct doing everything it can to keep it this way.


Despite its favorable conditions, cities represent less than a percent of the Common Ring. The space between major settlements is truly untamed wildernesses punctured only by the occasional village, of which there are many. The Common Ring contains over 4 million settlements with more than 100 inhabitants. Like the stars in the skies above them, vast distances separate the settlements. Nearly half of them remain uncontacted.
=== Operation ===
Over sixty percent of the Phaethon's components are located around Gira Gira. The main component is a ring composed primarily of tungsten alloy that orbits within Gira Gira's atmosphere. Only a kilometer wide, the ring gathers all the energy needed. To transfer this energy, Phaethon uses a Thaumic Drive. Through the remote activation of a drive located on the external ring on Eos, which most likely shares a pylon with the ring on Gira Gira, the ring on Eos spins. This spinning provides power for the other orbital rings to maintain Eos' orbit.


===The Boreal Ring===
It is unclear where or how the Thaumic Drive works even though the external ring is visible in many places. It is also unclear how this spinning translates to the other orbital rings. The current proposed method is through the use of [[Pylons|Faux Pylons]] to thaumically accelerate the micro-black holes within the other rings. If this is true, this would be the largest scale Faux Pylon within Cosmoria. Others hypothesize that the outermost ring is a generator which can then transmit the power to the other rings through more conventional means.
The Boreal Ring, named for the [[Boreal Anemoi Company]] and the [[Boreal Empire]] that replaced it, is the newest region as well as the coldest. The innermost area allows for liquid water for brief portions of the year, but most water remains frozen. Lightly populated, the region is nonetheless home to large amounts of energy-intensive industries such as element synthesis and asteroid refinery. These islands of heat in the otherwise frozen wasteland create wet urban environments. Straying too far from these cities leaves one in endless snowbanks.


Rail in the Boreal Ring is limited to large freight trains that occasionally have areas reserved for passengers. They can operate on cold superconductors, allowing for cheaper construction and operation. The newest and largest space ports on Eos can be found in the Boreal Ring. The byproducts from the constant use of rocket engines, industry, and other activities create toxic pools that would evaporate or break down at higher temperatures.
==Major Cities==

==Seasonal Climate==
Eos has had a substantial wobble for all of recorded history. If the star were stationary, this would create little to no variance; however, the star effectively orbits the "barycenter" it shares with the disk. This orbit creates a bobbing motion that results in days and nights on the megastructure. Combined with the disk's wobbling, there are periods, called "Eos Years" over which the portions of the disk receive more or less sunlight. Additionally, in the coolest part of the year, sunlight is much less direct. The seasonal climate matters far less in the blazing Icaran Ring than it does in the frigid Boreal Ring. At the farthest reaches of the disk, the variation becomes extreme, varying by over 200 degrees Celsius (about -200 to a little below freezing).

Influence by nearby stars and planets also causes the disk to flex slightly. This flexing and relaxing takes place over six hundred years and is again most influential for the Boreal region. It changes how much sunlight an area is exposed to during the "summer" periods, leading to the Boreal Region sometimes flowering in rare events called "Vernal Events," attracting tourism but also inhibiting industry.

==Orbiting Bodies==
Eos, in particular the disk-star barycenter, is a massive object and thus possesses several orbiting bodies. There is evidence of a heavily depleted asteroid belt that once existed around the star that may have supplied a portion of the material that makes up Eos. In addition to natural bodies, there are gigatons of material placed into orbit around the body every year; much of it has become space junk. The oldest material orbiting Eos dates back over five million years.

===Albedo===
[[Albedo]] is the most massive natural satellite of Eos. It seems to have been left alone during the construction of the disk. Albedo orbits at 5.1 million kilometers from the star. Its orbit is inclined by 17 degrees relative to the disk as well. It is the brightest object in the night skies of Eos due to its incredibly high albedo for which it was named. Consequently, it is very cold on this world. It is covered in a layer of ice; however, islands of thriving ecosystems exist in volcanic regions. Geothermal energy heats most of the planet's cities. It was the first world colonized by [[Humans]] outside their home system.

===Scintilla===
[[Scintilla]] orbits at about 6.5 million kilometers. The planet has a very low surface gravity and density, resulting in a very small population. By mass, it is over twenty-five percent copper. Most scientists believe the planet is a byproduct of Eos' construction. Its inhabitants have been slowly eating away at the planet, converting it into raw materials. Much of the planet has fueled the industries in the Boreal Ring.

===Eosphoros===
[[Eosphoros]] is a large terrestrial planet located 10 million kilometers from the star. A [[Hedonist World]], Eosphoros is home to a large number of ruins from the ancient [[Second Aeternal Society]]. Its [[Cherubic Sentries|ancient guardians]] have never allowed an external nation, save for the [[Triumvirate Civilization]], to conquer it. Eosphoros has a thick atmosphere and rich geothermal activity that keeps it warm. It seems to have no intelligent life, its inhabitants having evolved into beasts of all kinds, including [[Aeternapes]].

==Dark Side of Eos==
Reverse the highly populated side of the disk is a sparsely populated region poetically called the "dark side." Without much in the way of ground to stand on, jagged struts, beams, and pillars are the only solid surface. Eos' defense systems prevent any intrusion deeper than 20 kilometers. The defense of choice is electrical discharges, vaporizing any that dare trespass upon the disk's inner workings. A handful of facilities take advantage of this system, gathering a great amount of energy in the process. While out of the way, the power in this area is cheap and thus sustains a handful of energy-intensive industries. Most of these facilities are pressurized as the air on this side is thin and toxic.

==Composition==
Beyond the internal structure of resolute bronze, Eos is composed of whichever substance was cheapest for the civilization building the section. Some areas are composed of lithium and beryllium, suggesting a civilization capable of large-scale fusion without much use for these materials. Many areas are composed of heavier metals; asteroids often fed 3D printers. Silicates are common as well. There is evidence that entire planets have been used as feedstock for some of the oldest areas.

The most recently built areas, built by the [[Dominion of Astraeus]], are composed of an iron-silicate mixture. It was created by importing energy from [[Sagittarium]] to turn an orbiting dwarf planet, '''Aura''', into raw materials. While most of the disk is solid, filled with an ultra-low-density substance that maintains rigidity despite being mostly vacuum, many of the newest areas have yet to have been filled in, creating a slightly diagonal pull of gravity in those regions.

=Biosphere=
Across Eos, there exist thousands of unique biomes, ecosystems, and organisms. Life from throughout Cosmoria, even from as far as [[Florathel]], have colonized Eos. The biosphere occupies nearly all of Eos, including the space around it, which hosts large amounts of [[Spaceborne Life]], and vacuum-tolerant microbes that reside within its interior. The vast majority of biomass exists on Eos' surface, in particular in the Common Ring. It accounts for slightly under 90% of its total biomass. Consequently, water-based life is the most common life on Eos.

[[Ma'eau]] created most of the life on Eos, the species developed to fulfill specific roles. The entity is deeply embedded into Eos' biosphere and works constantly to maintain its fragile balance. Other forms of life, such as life from [[D'Naevium]], remain isolated and thus rarely interacts with most other life.

==Marred Regions==
A [[Marred Life|Marred Region]] is a region of Eos created by Ma'eau during its mental dissociation. Often called "Ma'eau's Civil War," numerous competing wills within it warred against one another. During this period, Ma'eau had a difficult time creating new organisms or guiding their evolution, leading to an increase in genetic diversity or the propagation of undesirable mutations.

Standing in a marred region, one would usually see little of note. In the majority of these areas, bizarre microbes reduced the soil into a slurry of acidic compounds, resulting in a muddy wasteland punctuated by the occasional pool of acid. Deeper into these ecosystems, where these microbes act as the basis of the ecosystem, one would have hardly anywhere to stand. In most of these regions, deep pools of sulfuric acid create swamp-like conditions throughout much of the biome.

=Phaethon=
Maintaining Eos requires far more energy than the small star could ever hope to provide. While drawing energy from the star is practiced in the innermost regions, most areas require imported energy. Without robust supply chains that can provide all the needed antimatter, the industry on Eos crawls to a halt. Those who built Eos were also aware of this glaring problem; the disk required nearly ten times more energy than Eos can provide to stay together.

This is where '''Phaethon''' comes in, the system that powers Eos. A decentralized network unrivaled in complexity, Phaethon tirelessly works to maintain the orbital rings and the infrastructure powering them. The construct has been demonstrated to be somewhat intelligent. Occasionally, its drones will find asteroids or other material to repair Eos, always careful to never take anything artificial.

Phaethon has two twin rings, the outermost ring of Eos and a much larger rotating ring orbiting within [[Gira Gira]]'s atmosphere. The ring around Gira Gira gathers and remotely transmits power to the ring on Eos. There are numerous underground factories on Gira Gira's largest planet, [[Taek]], which are most likely responsible for creating the various craft Phaethon commands. The factories are nearly entirely mechanical, with few electronic devices present. A central line shaft is responsible for the power supplied to machine. Phaethon's drones frequent Taek, but none have ever observed the factory running.

The drones derive power from the gradual unwinding of a spring. It is unclear how they power their sensors or even how they are capable of such complex actions as they are each made up of billions to trillions of often microscopic gears. They contain thousands of smaller machines responsible for internal maintenance. Their springs need to be rewound every so often, likely at substations similar to the main factory. They are made up of the same tungsten-titanium alloy as the ring. They often grab onto departing craft or climb tall structures to leave the disk.

On Eos, capturing or otherwise interfering with these drones, even if they cause property damage, is a capital offense. This is obviously to protect the structural integrity of the structure but to also learn about them. There are most likely several factories or substations located within Eos, but internal exploration of the disk is impossible. Boring into Eos is incredibly difficult, Phaethon usually forcibly stops any who try by sending strong electromagnetic pulses at the offending borers. Thus, Phaethon's structure has been shrouded in mystery, the construct doing everything it can to keep it this way. One city, [[Kristadt]], is a locus of activity for these drones, but its secretive government prevents further study. Remote observation confirmed the existence of numerous tunnels that lead into Eos' interior within the city.

Over sixty percent of the Phaethon's components are located around Gira Gira. The main component is a ring composed primarily of tungsten alloy that orbits within Gira Gira's atmosphere. Only a kilometer wide, the ring gathers all the energy needed. To transfer this energy, Phaethon uses a [[Pylon#Faux Pylon|Faux Pylon]]. The ring on Eos spins as it absorbs thaumic energy. It is this spin that allows the entire structure to retain its shape. Phaethon often discharges excess energy in the form of electrical current. Large cities on Eos are consequently located near discharge points.

=Major Cities=
{| class="fandom-table"
{| class="fandom-table"
|+
|+
Line 126: Line 383:
!Population
!Population
!Type
!Type
!Allegiance
|-
|-
|[[File:Drusidia3.png|100px|center]]
|[[File:Drusidia3.png|100px|center]]
|[[Scipio]]
|[[Enyo]]
|500 Billion
|497 Billion
|Capital Territory
|Capital City
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|[[File:UnknownFlag.png|100px|center]]
|[[Civestadt]]
|408 Billion
|Capital District
| align="center" |[[File:QPA Flag.png|30px]]<br><small>Quintet Payotari Association</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
Line 136: Line 401:
|355 Billion
|355 Billion
|Duchy
|Duchy
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|-
|[[File:Nisrine Collective Flag.png|100px|center]]
|[[File:Nisrine Collective Flag.png|100px|center]]
Line 141: Line 407:
|217 Billion
|217 Billion
|City State
|City State
| align="center" |[[File:Nisrine Collective Flag.png|30px]]<br><small>Nisrine Collective</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
|[[Alphos]]
|[[Karlastadt]]
|198 Billion
|City State
| align="center" |[[File:Unknown.png|30px]]<br><small>Karlastadt</small>
|-
|[[File:UnknownFlag.png|100px|center]]
|[[Karaos]]
|176 Billion
|176 Billion
|Palatinate
|Palatinate
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|[[File:UnknownFlag.png|100px|center]]
|[[Espacia]]
|128 Billion
|City State
| align="center" |[[File:QPA Flag.png|30px]]<br><small>Quintet Payotari Association</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
|[[Lowa]]
|[[Lowa]]
|109 Billion
|104 Billion
|Palatinate
|Palatinate
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|[[File:UnknownFlag.png|100px|center]]
|[[Daipho]]
|97 Billion
|City State
| align="center" |[[File:QPA Flag.png|30px]]<br><small>Quintet Payotari Association</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
Line 156: Line 443:
|86 Billion
|86 Billion
|Margraviate
|Margraviate
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
|[[Onaud]]
|[[Citredo]]
|80 Billion
|City State
| align="center" |[[File:QPA Flag.png|30px]]<br><small>Quintet Payotari Association</small>
|-
|[[File:UnknownFlag.png|100px|center]]
|[[Aztaya]]
|77 Billion
|77 Billion
|County
|Margraviate
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|-
|-
|[[File:UnknownFlag.png|100px|center]]
|[[File:UnknownFlag.png|100px|center]]
|[[Yakusoku]]
|[[Citredo]]
|75 Billion
|City State
| align="center" |[[File:QPA Flag.png|30px]]<br><small>Quintet Payotari Association</small>
|-
|[[File:Altgraviate of Yakusoku.png|100px|center]]
|[[Deungnamu]]
|54 Billion
|54 Billion
|Altgraviate
|Altgraviate
| align="center" |[[File:GM.jpg|30px]]<br><small>Greater Martial Consilium</small>
|}
|}


=Physical Geography=

==Major Seas==

Eos has two trillion bodies of liquid, water or otherwise, on its surface that are larger than one hectare in area. Seas are defined as bodies of liquid with areas greater than half a percent of Eos' total surface. The "Dark Side of Eos" has some seas, but the pressure is rarely high enough to sustain them.
== Physical Geography ==
=== Major Seas ===
Eos has two trillion bodies of liquid, water or otherwise, on its surface that are larger than one hectare in area. Seas are defined as bodies of liquid with areas greater than half a percent of Eos' total surface. The "Dark Side of Eos" has its own seas, but the largest ones generally mirror the below seas albeit with lower volumes.


{| class="fandom-table"
{| class="fandom-table"
Line 222: Line 522:
|-
|-
|September Sea
|September Sea
|228 Billion km<sup>2</sup>
|128 Billion km<sup>2</sup>
|0.65%
|0.35%
|Lead
|Lead
|}
|}



=== Ventemir ===

=== Ouranir ===

=== Aztaya ===

== Biosphere ==
[[Category:Martial Space]]
[[Category:Martial Space]]
[[Category:Aylathiya]]
[[Category:Scope: Cosmoria - Aylathiya]]
[[Category:Scope: Cosmoria - Eos]]
[[Category:Stars]]
[[Category:Stars]]
[[Category:Star Systems]]
[[Category:Star Systems]]
[[Category:Duodecillionaire]]
[[Category:Author: Duodecillionaire]]

Latest revision as of 01:24, October 13, 2025


Dance, O Freest Aeon
This content is a part of Cosmoria.

Eos
A to-scale map of Eos. The star in the center is 200,000 km across. The grey colors represent "dry land" insomuch as it could be stood on. The blue is liquid water, while the orange is molten metal.
Meta Info
Article Creator

Duodecillionaire

Setting
Author

Duodecillionaire

Location Info
Distance From Galactic Center

0.5 Lightyears

Region
System

Astraeus

Designations
Demonym

Eossian (uncommon)

World Type

Disk

World Class

Megastructure

Orbital Info
Parent Body

Eos (Star)

Parent Body Type

Red Dwarf

Inclination

0 Degrees

Irregularities

Irregularities in density and mass distribution contribute to a wobble over two hundred standard years.

Properties
Mass
  • 0.7 M☉
  • 0.18 M☉ for the star
Radius

Three Million Kilometers

Diameter

Six Million Kilometers

Density

5 g/cm3

Surface Gravity

0.9 — 1.1 Gs

Composition
Average Temperature

15 Celsius

Maximum Local Temperature

400 Celsius

Minimum Local Temperature

-70 Celsius

Bodies of Liquid
  • Isochron Sea
  • Sensen Sea (Water)
  • Framboise Sea (Water)
  • Etoile Sea (Water)
  • Ka'a Sea (Water)
  • Boreal Sea (Water)
  • Platinum Sea (Water)
  • Superboreal Sea (Brine)
  • September Sea (Lead)
Liquid Bodies Composition

Water, Gallium, Lead, Ammonia, Benzene

Maximum Liquid Body Depth

1000 Km

Landmass % Coverage

66%

Ice Cap Coverage

5%

Atmospheric Pressure

0.75 — 1.0 Bar

Atmospheric Composition
  • Nitorgen
  • Oxygen
  • Carbon Dioxide
  • Methane
  • Argon
  • Neon
  • Hydrogen
  • Ammonia
Age
  • 1.1 Million Years (Construction Begins)
  • 6.3 Billion Years (Star)
Rotation Period

15 Years

Axial Tilt

0 Degrees

Solar Day

30 Standard Days

Geography
Major Continents
  • Zhiteng
  • Ventemir
Primary Terrain

Toward the center, it is flat. As one travels outward, the terrain becomes increasingly variable.

Climate
Average Cloud Coverage

52%

Average Wind Speed

20 Kmh

Average Annual Rainfall

> 1.4 ⋅ 1010 Km3

Average Annual Snowfall

> 4.0⋅ 108 Km3

Climate Zones
  • Icaran Ring
  • Hadean Ring
  • Common Ring
  • Boreal Ring
Biomes



Carbon Based

Forests
Rain Forests
Desert
Reefs
Grassland

Silicon Based

Dendroid Forest
Rock Field

Benzene Based

Hadean Fields
Most biomes found on D'Naevium

Combination

Marred Biomes
Oceans
Hybrid Steppe

Hottest Region

Icaran Ring

Coldest Region

Zhiteng

Satellites
Number of Artificial Satellites

Well over one billion

Biosphere
Estimated Number of Species

1.2 · 10 12

Biosphere Origin
Society and Politics
Population

9.7 Trillion

General Development

High in cities, very low in rural areas

Economy
GDP

5.5 · 109 Carosi

Currency
  • Carosi
  • Fex
  • Entente Shares
  • Civs
  • Antis
Major Imports

Every product imaginable

Major Exports
  • Processed Metals and Alloys
  • Plastic/Polymers
  • Weapons
  • Spacecraft
  • Agriculture
  • Carbon Fiber and Graphene
  • Pharmaceuticals
  • Petroleum
  • Tech
  • Aircraft
  • Ground Vehicles
  • Radioactive Materials
Trade Partners

Nearly the entire universe

Unique Local Resources
  • Resolute Bronze
  • Gallium Crude
  • Naturally-Occurring Pharmaceuticals

As far as stars go, Eos numbers among the smallest in Cosmoria. At just 200,000 km across, its habitable zone lies a mere two million kilometers from its surface. Under normal circumstances, this star would have a population somewhere in the billions, a mote on the scale of Cosmoria's civilizations. Eos, however, is not a typical star, for surrounding it is a megastructure dwarfing all others. Three terrestrial worlds, hundreds of asteroids, and millions of stations orbit the disk itself. This massive construction is a large flat disk orbiting this dwarf star. On it resides nine trillion, environments unseen anywhere else, and some of the most influential empires in history.

Eos is the gateway to Aylathiya from elsewhere, lying in the center of Martial Space. An economic powerhouse: merchants, companies, and governments often use the large structure as a staging ground for commerce of all kinds. Underneath the trade-friendly orderly surface is an eternal conflict as dozens of factions strive to exploit Eos' lucrative position. A gilded world, the guise only occasionally disappears. When it does disappear, however, it disappears with great force, leaving the rest of Cosmoria suffering generation-defining recessions.

Nearly every group imaginable takes credit for the creation of Eos, from the Dotsk who have a reputation for building megastructures, to nationalists in Florathel that claim only the Lareas Alliance could have created the structure. Historians on Eos sometimes credit its creation to others, but the consensus is that Hyperion built most of it. Regardless of the origin, it has continually existed for essentially all of recorded history, likely taking much of this time to construct. It is technically unfinished, as a large section remains unfilled.

The world remained a disunited backwater on the galactic stage until the rise of the Triumvirate Civilization 4,000 years before the present day. This civilization's meteoric rise caused Eos' population to balloon to over 20 trillion by 8,000 CE. When the Triumvirate fractured as its three leaders went their separate ways, the resulting war caused its population to dip below one trillion, resulting in a galactic recession that has still technically not ended. From then, Eos has continually united and fractured until the modern day, currently existing mostly united under the Greater Martial Consilium.

History

Pre-History

The Eos system formed shortly after the emergence of Cosmoria 6.2 billion years before the present day. One of Cosmoria's lightest stars, Eos was a red dwarf with as many as five planets under its sway. The system was likely very compact, stretching at most seven million kilometers from the star's surface. The star likely never hosted native life.

Construction

Eos, the disk, is about 1.1 million years old, making it by far the oldest extant megastructure in Cosmoria. The original disk, a thin band of living area scarcely one thousand kilometers wide, was a fundamentally different megastructure. With gravity powered by rotation and the liveable area facing the central star, this ancient ring had about a millionth of its current surface area and weighed about as much as a large terrestrial planet.

This ring, called Ur-Phaethon, was made up of silicon polymers interspersed with carbon fiber. It may have been grown instead of built as microscale fossils of bacteria and fungi permeated the ring. The next ring orbited much farther away and was thus larger; its name was Cycnus. The next rings, smaller and closer to the star, were Sthenelus, Eridanos, Clymene, Merope, Cephalus, and Cinyras. Each ring had a different inclination so as to avoid shading the others. As many as twenty trillion could have called these rings home. The Moridian High Command began constructing Aubade shortly after completing the seven rings.

Expansion

The ancient king, Erekada Vili'ioux Ma'eau, is said to have been wealthy beyond imagination. With armies of machines at his disposal, absolute power over Hyperion's economy, and support from the Lareas Alliance, Erekada began construction on the disk of Eos. The first step was to repurpose the existing rings. Oral tradition from the Kristals, descendants of the Hyperian people, claims that taking the rings was a bloody process. Albedo, Eos' largest extant satellite, has evidence of this conflict, namely, a sudden increase in craters in the geologic record. Once secured, Erekada's armies heated and warped the rings into tubes.

Heavier than most stars, it is almost impossible for Eos' mass to have been harvested through normal means. There are several hypotheses, from a contract with an immensely powerful Spirit to a mechanism that could convert Thaumic Energy into physical matter. The most well-supported hypothesis is that Erekada was an esoteric magus. These magi can exploit Cosmoria's planes to harness the concept they represent. If there was a plane of Resolute Bronze, Erekada could have used it to gather unlimited construction material. At such a scale, Erakada would need to be the most potent esoteric magus in history, so he likely had thousands of assistants.

Eos' interior support structure was first. The Phaethon system replaced the Ur-Phaethon ring next. This massive generator supplied Erakada's machines with their needed energy. These mechanical construction workers, with little in the way of electric parts, derived power from a tightly wound spring. Erakada created the Loresavt to handle logistics, manual labor, and planning. To cover Eos' surface in a natural layer, the Loresavt decided to dismantle several planets. The planet of Scintilla represents the remains of construction and is composed of impure Resolute Bronze. Delyatu, a dubiously intelligent mechanical construct from this period, claims to be Erakada's reanimated corpse.

The fall of the Lareas Alliance and Hyperion in 189,442 BCE did a number on Eos. The The Swarm of Advaris devastated galactic civilization. Eos' automated defenses warded off most of the damage, however. Loresavt armies repaired, defended, and even continued construction on the disk. Sections completed during this period are composed of carbon fiber instead of resolute bronze. Stress from the differences in tensile strength caused many of Eos' surface features. Most mountain ranges and ocean basins formed over the next 100,000 years. Small populations remained on Eos.

Ancient History

Foundations

Paradigm was the first modern city on Eos. Then called R'Yvv, Paradigm represented the entirety of civilization in Aylathiya. Its founding Naidarans fought countless wars with native Kristals over their territory. Neither species saw the other as intelligent and, without modern decoding techniques, communication was impossible. In 2,000 BCE, Kristals represented the vast majority of the population. Minorities, such as Naidarans and Loresavt, each accounted for ten percent. During this era, Paradigm rose and fell three times. The Kristals nearly annihilated the Naidarans on a handful of occasions. The only thing that prevented total Kristal victory was the Naidaran "Hero." Every century a Hero emerged amongst the Naidarans who drove back the hoards of Kristals. Ancient murals and slabs describe heroes as "cold to the touch," "invulnerable," and "holders of lightning." These impressive abilities suggest the first known use of Invocative Thaumaturgy.

The Civese were an ultra-rare species that only recently emerged. Occupying less than a hundred square kilometers of land, less than three hundred called Eos home. As they slowly developed agriculture, their population increased by thousands of times. They resided near the modern site of Civestadt. Another primitive species, the Arkhosians, originated on Sakijast, Matoehdahn, only to have traveled to Eos during the reign of the Lareas ALliance. Unrecognizable from their original state, they remained in isolated villages during this period. The Atlins remained primitive throughout this period. Made of plasma, it was difficult for them to break out of their ecological niche.

The First Angel

The Magi Return

As centuries went by, many Naidaran heroes lived and died, villagers congregated and scattered, and monuments rose and fell. Seven hundred years after Paradigm's founding, its people developed the ultimate cultural advancement, the ability for anyone to practice Invocative Thaumaturgy. The ancient hero, Director C-Tealkalich, spread his abilities amongst his fellow Naidarans. At once, they pushed back most Kristals. While never quite uniting Eos, they became its dominant power by the year 1000. By then, they called themselves the Cosmic Commonwealth of Magi.

A small wave of refugees landed on Eos in 1987 CE. Fleeing the collapse of Karith the Accursed's empire, the Kalar refugees numbered only one thousand. Most did not make the perilous journey this deep into Aylathiya, let alone the ancient megastructure in its center. Eleven further waves brought the Kalar population to 100,000. Despite bringing advanced technology, they lacked the extensive port infrastructure to repair their crashed ships. Kalar civilization on Eos depended on what little industry they brought with them. 3D printers and solar forges represented the bulk of their technology. After just a century, their society decayed beyond functioning.

The Kristals nearly destroyed all Kalar settlements; were it not for intervention by the Cosmic Commonwealth, they would have gone extinct after only 50 years. Communication was slow, but rough approximations of sounds were sufficient. While a handful of the original refugees were alive, most were born on Eos and thus gave an inaccurate account of their time in space. Tales of deities, mountain-eating monsters, and "people beyond the sky" became even more embellished due to analogies, metaphors, and untranslatable words. The Commonwealth immediately attempted to investigate their stories. However, without the requisite technological development, they were trapped on their homeworld.

After further centuries, the Commonwealth's most devoted Magi would elevate to the status of Paladin. This ultra-devoted practitioner sat at the apex of Invocative Thaumaturgy. These Paladins wielded tremendous power that surpassed that of even the ancient heroes. For the first time, Naidarans gained the upper hand in the perpetual war against the Kristals. Like removing a predator from an ecosystem, Naidarans, Civese, Kalar, and Loresavt populations greatly increased.

Leaving the Surface

The Cosmic Commonwealth perfected space travel nearly a century after it was founded. The first spacefarers used space planes to travel anywhere on Eos within three weeks. Large boosters brought the plane to the correct height only for it to glide for most of the journey. Most of these trips were one-way. Further advances allowed for them to remain airborne throughout the whole trip, cheapening cost but requiring cargo to be ejected from high in the air. Colonies on the far side of the disk were easy to keep in line; any wavering in loyalty would mean cutting off resource deliveries. The first challenge was making them profitable. It was difficult to return resources over reasonable periods.

Given Eos' high escape velocity, it took very long to leave it altogether. The first Naidarans to leave spent weeks in orbit. Climbing even higher, to Eos' satellites, yielded little. The first moon, Albedo, was a barren wasteland of glaciers punctuated by small oases of volcanic activity. Scintilla and Eosphoros were no better; both worlds barely clung to toxic atmospheres. Interstellar travel was still out of the question. With population growth leveling and increasing automation, the drive to expand dwindled. Eos was effectively infinite, held all the resources a civilization could need, and was rapidly developing.

The Commonwealth found the needed motivation in 598 CE when Dotsk explorers landed on Eos. Unlike previous species, however, they did not leave behind a settlement. The Dotsk were far ahead of any civilization on Eos, but there was one thing that it had that they wanted, Resolute Bronze. The Dotsk homeland, called The Array, desired a strong ally and began trading for the material rather than risk a war. By 805 CE, the Dotsk figured out how to synthesize the valuable metal, but Eos now had technological parity with them. Commonwealth envoys explored all of Cosmoria, importing promising paladins from throughout. Already the cosmopolitan world, Eos' diversity only increased. R'Yvv, now called Zero'Yvv, had a population of 50 billion and over fifteen different species.

The Overlords

An Overlord is a being of immense power that qualifies as a civilization in its own right. Whether an ultra-powerful Magi, an artificial superintelligence, or a hivemind organism, these singletons act as individuals on the galactic stage. The Commonwealth observed several naturally occurring Overlords, such as Laborosoarchod. At first, they thought little of these ultra-powerful entities. The unrivaled paladin army was thought to be invincible. Over one billion of the finest paladins in the universe, led by generals of legendary devotion called Saints, were impossible to destroy from the outside.

The fall came from within. The strongest saint at the time, H-Araimaluk, discovered a new form of Thaumaturgy, now called Meridian Thaumaturgy. This practice is slightly different from Invocative Thaumaturgy—it is centered on devotion to an intelligent being rather than a concept. H-Araimaluk abandoned the Commonwealth to focus on what he called The Orrery God. After offering his god every state secret, a power struggle emerged amongst saints seeking to replace him. The resulting civil conflict tore apart the Commonwealth's large army, plunging Eos into chaos.

The following centuries brought increasingly advanced technology and a sudden increase in the number of Spirits near Eos. While most spirits have no willpower, meaning they pose no threat, spirits with even a modicum of self-interest can pose a great threat. Cosmoria's peoples warred against these dangerous entities, in particular the spirit-like Naidarans. In their war against the spirits, The Array created Belshazzar. This system took advantage of a peculiar trait of the Dotsk—spirits can possess their bodies. Every time a spirit possessed a Dotsk, surveillance systems allowed Belshazzar to apprehend the unfortunate individual. The possessed ended up confined in large prisons for study. With a stockpile of weaponizable spirits, the Array rapidly grew in power. Eos' disunited cities could not resist its conquest.

The Belshazzar system proved too effective. With Dotsk sent throughout Cosmoria to collect spirits, increasingly powerful and intelligent beings ended up under Belshazzar's watch. Long before the Dotsk realized, spirits such as Nabopolassar and Khrumvasaxterit'shymm took advantage of this convenient spiritual army. The moment Belshazzar captured the fabled Orrery God, the accumulated spirit army burst forth, overwhelming Belshazzar's systems. The resulting army became the Oberherr League, Eos' new rulers.

The Oberherr League is less a state and more a period of history. A kratocracy, the League cycled through dozens of leaders, treaties, and systems. The people of Eos were pawns in the endless machinations of this new spiritual order. Spirit armies, taking on the form of millions of possessed Dotsk, became a horrifying enemy that decreased Eos' population. The disk gained a reputation as a ruthless place to be avoided at all costs.

The Second Angel

Physical

Embedded within Eos is a large mechanical apparatus of fractal complexity. The task of maintaining the disk against tidal forces, asteroid impacts, opportunists looking to harvest its materials, and other degradation, requires more energy than the remarkably small star can provide. Eos has an entire ecosystem within and around it that serves to maintain its structural integrity. Powering this ecosystem is a vast sister structure located around the nearby star of Gira Gira. Called Phaethon, the system has successfully defended it for longer than modern civilization has existed.

Structure

Eos is composed of Resolute Bronze, a gold-brown-colored alloy widely renowned for its material strength. Structures like Eos have a maximum theoretical radius of over four million kilometers. Eos has a radius of three million kilometers and a surface area equal to 25 trillion square kilometers. Embedded within this structure are a series of large orbital rings with a thickness of, on average, 1150 kilometers. Within them, small charged black holes race around the star at relativistic speeds, their momentum canceling the force of gravity that would otherwise collapse the disk.

Eos is not quite flat; it gently angles upwards at 0.01% grade. The resulting bowl shape keeps gravity uniform and air contained. Were it perfectly flat, gravity would pull towards the center, straining the orbital rings and making life impossible on its surface. The structure thickens as the distance to the star increases. Small variations in the thickness results in mountains, lakes, flats, and oceans. Overall, Eos is very smooth, however.

Climatic Regions

The Icaran Ring

A mere one million kilometers away from its star lies in the innermost region of Eos. Carbon-based life of any kind cannot last long in these hellish conditions. Water becomes mist within moments. In this region, seas of molten lead are commonplace, with an entire ecosystem of this lead-based life inhabiting its seas. As the lead evaporates, at a slow rate given how close it is to its melting point, the toxic clouds interact with Eos' oxygen-rich atmosphere, creating particles of lead oxide that can travel far across the disk. Drifts of the snow-like substance are common much farther in, but if they fall back into the Icaran Ring, they will degrade into liquid lead once more.

Silicon dominates the soil of this region, and most carbon quickly becomes carbon dioxide here. The occasional solar flare from the star can liquefy large portions of the soil, leaving in its wake large fields of quartz crystals that can stretch for thousands of kilometers. The other structures to break up the flat landscape are massive wind turbines, capable of converting the powerful wind currents of Eos into energy. Winds in the Icaran Ring rarely drop below 50 kilometers per hour, requiring life such as the Atlins to seek shelter in caves or behind large walls. The air is choked with smog, particulates, and other impurities, while also having nearly twice the pressure as it does towards the edge of the disk.

For the past 5000 years, large mirrors have existed above Eos to concentrate light onto Orcubor settlements, creating regions of over 2000 degrees Celsius. These hellish regions threaten the very structural integrity of the disk, requiring extensive cooling systems maintained by various governments. The most extreme of Cosmoria's life, aluminum-based creatures made of liquid quartz, inhabit these furnace-like conditions.

The Hadean Ring

Further out lies an area that is too hot for liquid water to exist but too cold for seas of lead. The only life in this area are organisms capable of weathering its barren flats. Dotted by the occasional oasis, not of water but of gallium metal, clouds of any sort are rare. Interaction with air and water vapor from further out causes the gallium to oxidize, creating a thin crust above the lakes of metal. Low-energy ecosystems exist in these rare oases.

Life from D'Naevium is perfectly adapted to this environment and exists in isolated communities around the gallium deposits. The animals learned to punch through the thin sheets to drink. They also became far more resistant to wounds. Their injuries are self-cauterizing since their gallium blood immediately hardens. With ferocious abandon, the largest predators know no fear, throwing themselves at anything they can. Vehicles passing through the region are prime targets.

Far from the pools of gallium, the only thing to disrupt the landscape is train tracks, wreckage from an untold number of battles, scavengers, and autonomous machines poking through the igneous soil. Large fields of solar panels power remote facilities and factories. The occasional settlement, pressurized like a space station for every species except Ror Units, is usually near the rail lines. The atmosphere is pure compared to the Icaran Ring, but still not safe to breathe for most.

The Common Ring

The Common Ring is the largest by area and the most heavily populated. Beginning two million kilometers from Eos, vast seas of water dominate the ring. Remnants of an ancient molecular nebula explain where the resources for the oceans came from. From the nearly-boiling seas of the interior to the periodically frozen seas of the edge, the Common Ring hosts life of all sorts.

As one moves from the center of the ring to the edge, the variation in the surface increases. By the Common Ring, large mountain ranges and valleys dominate the landscape. As for visual variety, the Common Ring reigns supreme as vast forests cover much of it. Forests battle against the massive carbon dioxide production of not just the Icaran Ring but the intense industry of its inhabitants. If a species is carbon-based and can tolerate water, chances are that a population lives in the Common Ring. The interaction between trillions of bacterial species creates a unique ecosystem in which nearly all lifeforms can survive.

Despite its favorable conditions, cities represent less than a percent of the Common Ring. The space between major settlements is truly untamed wildernesses punctured only by the occasional village, of which there are many. The Common Ring contains over 4 million settlements with more than 100 inhabitants. Like the stars in the skies above them, vast distances separate the settlements. Nearly half of them remain uncontacted.

The Boreal Ring

The Boreal Ring, named for the Boreal Anemoi Company and the Boreal Empire that replaced it, is the newest region as well as the coldest. The innermost area allows for liquid water for brief portions of the year, but most water remains frozen. Lightly populated, the region is nonetheless home to large amounts of energy-intensive industries such as element synthesis and asteroid refinery. These islands of heat in the otherwise frozen wasteland create wet urban environments. Straying too far from these cities leaves one in endless snowbanks.

Rail in the Boreal Ring is limited to large freight trains that occasionally have areas reserved for passengers. They can operate on cold superconductors, allowing for cheaper construction and operation. The newest and largest space ports on Eos can be found in the Boreal Ring. The byproducts from the constant use of rocket engines, industry, and other activities create toxic pools that would evaporate or break down at higher temperatures.

Seasonal Climate

Eos has had a substantial wobble for all of recorded history. If the star were stationary, this would create little to no variance; however, the star effectively orbits the "barycenter" it shares with the disk. This orbit creates a bobbing motion that results in days and nights on the megastructure. Combined with the disk's wobbling, there are periods, called "Eos Years" over which the portions of the disk receive more or less sunlight. Additionally, in the coolest part of the year, sunlight is much less direct. The seasonal climate matters far less in the blazing Icaran Ring than it does in the frigid Boreal Ring. At the farthest reaches of the disk, the variation becomes extreme, varying by over 200 degrees Celsius (about -200 to a little below freezing).

Influence by nearby stars and planets also causes the disk to flex slightly. This flexing and relaxing takes place over six hundred years and is again most influential for the Boreal region. It changes how much sunlight an area is exposed to during the "summer" periods, leading to the Boreal Region sometimes flowering in rare events called "Vernal Events," attracting tourism but also inhibiting industry.

Orbiting Bodies

Eos, in particular the disk-star barycenter, is a massive object and thus possesses several orbiting bodies. There is evidence of a heavily depleted asteroid belt that once existed around the star that may have supplied a portion of the material that makes up Eos. In addition to natural bodies, there are gigatons of material placed into orbit around the body every year; much of it has become space junk. The oldest material orbiting Eos dates back over five million years.

Albedo

Albedo is the most massive natural satellite of Eos. It seems to have been left alone during the construction of the disk. Albedo orbits at 5.1 million kilometers from the star. Its orbit is inclined by 17 degrees relative to the disk as well. It is the brightest object in the night skies of Eos due to its incredibly high albedo for which it was named. Consequently, it is very cold on this world. It is covered in a layer of ice; however, islands of thriving ecosystems exist in volcanic regions. Geothermal energy heats most of the planet's cities. It was the first world colonized by Humans outside their home system.

Scintilla

Scintilla orbits at about 6.5 million kilometers. The planet has a very low surface gravity and density, resulting in a very small population. By mass, it is over twenty-five percent copper. Most scientists believe the planet is a byproduct of Eos' construction. Its inhabitants have been slowly eating away at the planet, converting it into raw materials. Much of the planet has fueled the industries in the Boreal Ring.

Eosphoros

Eosphoros is a large terrestrial planet located 10 million kilometers from the star. A Hedonist World, Eosphoros is home to a large number of ruins from the ancient Second Aeternal Society. Its ancient guardians have never allowed an external nation, save for the Triumvirate Civilization, to conquer it. Eosphoros has a thick atmosphere and rich geothermal activity that keeps it warm. It seems to have no intelligent life, its inhabitants having evolved into beasts of all kinds, including Aeternapes.

Dark Side of Eos

Reverse the highly populated side of the disk is a sparsely populated region poetically called the "dark side." Without much in the way of ground to stand on, jagged struts, beams, and pillars are the only solid surface. Eos' defense systems prevent any intrusion deeper than 20 kilometers. The defense of choice is electrical discharges, vaporizing any that dare trespass upon the disk's inner workings. A handful of facilities take advantage of this system, gathering a great amount of energy in the process. While out of the way, the power in this area is cheap and thus sustains a handful of energy-intensive industries. Most of these facilities are pressurized as the air on this side is thin and toxic.

Composition

Beyond the internal structure of resolute bronze, Eos is composed of whichever substance was cheapest for the civilization building the section. Some areas are composed of lithium and beryllium, suggesting a civilization capable of large-scale fusion without much use for these materials. Many areas are composed of heavier metals; asteroids often fed 3D printers. Silicates are common as well. There is evidence that entire planets have been used as feedstock for some of the oldest areas.

The most recently built areas, built by the Dominion of Astraeus, are composed of an iron-silicate mixture. It was created by importing energy from Sagittarium to turn an orbiting dwarf planet, Aura, into raw materials. While most of the disk is solid, filled with an ultra-low-density substance that maintains rigidity despite being mostly vacuum, many of the newest areas have yet to have been filled in, creating a slightly diagonal pull of gravity in those regions.

Biosphere

Across Eos, there exist thousands of unique biomes, ecosystems, and organisms. Life from throughout Cosmoria, even from as far as Florathel, have colonized Eos. The biosphere occupies nearly all of Eos, including the space around it, which hosts large amounts of Spaceborne Life, and vacuum-tolerant microbes that reside within its interior. The vast majority of biomass exists on Eos' surface, in particular in the Common Ring. It accounts for slightly under 90% of its total biomass. Consequently, water-based life is the most common life on Eos.

Ma'eau created most of the life on Eos, the species developed to fulfill specific roles. The entity is deeply embedded into Eos' biosphere and works constantly to maintain its fragile balance. Other forms of life, such as life from D'Naevium, remain isolated and thus rarely interacts with most other life.

Marred Regions

A Marred Region is a region of Eos created by Ma'eau during its mental dissociation. Often called "Ma'eau's Civil War," numerous competing wills within it warred against one another. During this period, Ma'eau had a difficult time creating new organisms or guiding their evolution, leading to an increase in genetic diversity or the propagation of undesirable mutations.

Standing in a marred region, one would usually see little of note. In the majority of these areas, bizarre microbes reduced the soil into a slurry of acidic compounds, resulting in a muddy wasteland punctuated by the occasional pool of acid. Deeper into these ecosystems, where these microbes act as the basis of the ecosystem, one would have hardly anywhere to stand. In most of these regions, deep pools of sulfuric acid create swamp-like conditions throughout much of the biome.

Phaethon

Maintaining Eos requires far more energy than the small star could ever hope to provide. While drawing energy from the star is practiced in the innermost regions, most areas require imported energy. Without robust supply chains that can provide all the needed antimatter, the industry on Eos crawls to a halt. Those who built Eos were also aware of this glaring problem; the disk required nearly ten times more energy than Eos can provide to stay together.

This is where Phaethon comes in, the system that powers Eos. A decentralized network unrivaled in complexity, Phaethon tirelessly works to maintain the orbital rings and the infrastructure powering them. The construct has been demonstrated to be somewhat intelligent. Occasionally, its drones will find asteroids or other material to repair Eos, always careful to never take anything artificial.

Phaethon has two twin rings, the outermost ring of Eos and a much larger rotating ring orbiting within Gira Gira's atmosphere. The ring around Gira Gira gathers and remotely transmits power to the ring on Eos. There are numerous underground factories on Gira Gira's largest planet, Taek, which are most likely responsible for creating the various craft Phaethon commands. The factories are nearly entirely mechanical, with few electronic devices present. A central line shaft is responsible for the power supplied to machine. Phaethon's drones frequent Taek, but none have ever observed the factory running.

The drones derive power from the gradual unwinding of a spring. It is unclear how they power their sensors or even how they are capable of such complex actions as they are each made up of billions to trillions of often microscopic gears. They contain thousands of smaller machines responsible for internal maintenance. Their springs need to be rewound every so often, likely at substations similar to the main factory. They are made up of the same tungsten-titanium alloy as the ring. They often grab onto departing craft or climb tall structures to leave the disk.

On Eos, capturing or otherwise interfering with these drones, even if they cause property damage, is a capital offense. This is obviously to protect the structural integrity of the structure but to also learn about them. There are most likely several factories or substations located within Eos, but internal exploration of the disk is impossible. Boring into Eos is incredibly difficult, Phaethon usually forcibly stops any who try by sending strong electromagnetic pulses at the offending borers. Thus, Phaethon's structure has been shrouded in mystery, the construct doing everything it can to keep it this way. One city, Kristadt, is a locus of activity for these drones, but its secretive government prevents further study. Remote observation confirmed the existence of numerous tunnels that lead into Eos' interior within the city.

Over sixty percent of the Phaethon's components are located around Gira Gira. The main component is a ring composed primarily of tungsten alloy that orbits within Gira Gira's atmosphere. Only a kilometer wide, the ring gathers all the energy needed. To transfer this energy, Phaethon uses a Faux Pylon. The ring on Eos spins as it absorbs thaumic energy. It is this spin that allows the entire structure to retain its shape. Phaethon often discharges excess energy in the form of electrical current. Large cities on Eos are consequently located near discharge points.

Major Cities

Flag Name Population Type Allegiance
File:Drusidia3.png
Enyo 497 Billion Capital City
Greater Martial Consilium
Civestadt 408 Billion Capital District
Quintet Payotari Association
Err 355 Billion Duchy
Greater Martial Consilium
Paradigm 217 Billion City State
Nisrine Collective
Karlastadt 198 Billion City State
Karlastadt
Karaos 176 Billion Palatinate
Greater Martial Consilium
Espacia 128 Billion City State
Quintet Payotari Association
Lowa 104 Billion Palatinate
Greater Martial Consilium
Daipho 97 Billion City State
Quintet Payotari Association
Kristadt 86 Billion Margraviate
Greater Martial Consilium
Citredo 80 Billion City State
Quintet Payotari Association
Aztaya 77 Billion County
Greater Martial Consilium
Citredo 75 Billion City State
Quintet Payotari Association
File:Altgraviate of Yakusoku.png
Deungnamu 54 Billion Altgraviate
Greater Martial Consilium

Physical Geography

Major Seas

Eos has two trillion bodies of liquid, water or otherwise, on its surface that are larger than one hectare in area. Seas are defined as bodies of liquid with areas greater than half a percent of Eos' total surface. The "Dark Side of Eos" has some seas, but the pressure is rarely high enough to sustain them.

Name Surface Area Percentage of Eos Occupied Composition
Isochron Sea 2.83 Trillion km2 8.05% Water
Sensen Sea 2.51 Trillion km2 7.14% Water
Etoile Sea 2.40 Trillion km2 6.82% Water
Platinum Sea 1.60 Trillion km2 4.55% Water
Ka'a Sea 478 Billion km2 1.36% Water
Boreal Sea 432 Billion km2 1.23% Water
Framboise Sea 295 Billion km2 0.84% Water
Superboreal Sea 239 Billion km2 0.68% Brine
September Sea 128 Billion km2 0.35% Lead