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Ypsilos [ˈy.psi.los], sometimes spelled Üpsilos, is a white star on the edge of Aggregate Aylathiya. With less than half a billion years left on the main sequence, the star is steadily increasing in activity. The system is high in metal saturation, which gives its planets both a great economic advantage and stronger magnetic dynamos.

Ypsilos is one of three stars on the linear Aziz-Arsu constellation, a relatively new connection made between Zalanthium and Aggregate Aylathiya. With just one system between itself and Aurelios, the richest star in Zalanthium, the system is culturally influenced by both arms in almost equal amounts.

CAA pretends they control the system, but don't have any real enforcement
slight role as "bridge to Zalanthium" but not anything substantial
system was colonized, no native life except for Järiste's unknown subglacial stuff
Eestium somewhere? possibly the only single mine of it in the universe?

Planets

Liivakünka

Liivakünka is the innermost planet of Ypsilos, generally considered to be the harshest of its worlds. A tidally locked desert with a thin carbon dioxide atmosphere, the substellar point reaches an astonishing 340°C, while the night side is well below the freezing point of water. This, combined with its somewhat eccentric orbit caused by Hiiumaa's influence, makes any settlements limited to narrow bands by the kinds of climate control they have access to. The largest city on Liivakünka, Kullamägi, ranges from a temperature of 12°C to -45°C throughout the planet's 77 day year.

terrible winds, less terrible pressure, horrendous seasons
people can actually live on the night side quite comfortably! probably not too terribly populous but swagever we can figure out something for them to do. evil agriculture perhaps

Tärivere

Tärivere is the least massive of Ypsilos' planets, barely above the threshold of dwarf planet status. It is nearing a state of tidal lock, with a long rotation period of over six standard days. Tärivere is the most metal-rich body in the system, which combined with its lack of atmosphere and low gravity makes it a very profitable mining world. The temperature variation is worse then Liivakünka, though, with night side temperatures reaching cold enough to freeze nitrogen at below -200°C and day side temperatures scorching residents at over 320°C. The unfiltered ultraviolet rage of Ypsilos' spectrum does not help habitation efforts either.

Hiiumaa

Hiiumaa is the largest planet in the system, a hazy mauve gas giant with an orbit that keeps it well within the temperate zone of Ypsilos. Its clouds are primarily water and ionized vapors. As the year advances, the giant's eccentric orbit causes significant temperature variations, with the atmosphere being anywhere from 4 to 50 degrees C. During the summer, the water clouds condense less and a violet haze takes over much of the atmosphere. In the winter, stronger bands of white are visible.

Hiiumaa's axial tilt is quite extreme, stable at around 60 degrees.

As Hiiumaa has dense rings and no major moons, the radiation belts typical of gas giants are notably absent.

roughly saturn-mass giant
no major moons somehow, do not worry
avg temp goes from 4 to 50 C, eccentric orbit
about a 60 degree axial tilt WOW
gases mined and farmed for the typical stuff (duo explain), rings somewhat mined for rock as well, minor moons broken down and engineered for Taevaskoda

Taevaskoda

Taevaskoda is the main industrial project of Ypsilos' people. A great constellation of space stations large and small, all orbiting in Hiiumaa's shielding magnetosphere. As with most settlements in the system, climate control technology is of great priority, needing to withstand the variable insolation throughout their parent planet's year.

The largest twenty stations of Taevaskoda have a loose alliance, making up about half the population of the total assemblage at over fifty million. Their standardized spin-gravity is 0.75 G, significantly less than Jändjatali's gravity but greater than the next largest planet's.

roughly 20 stations that combined make up a large population of like 50 million. babylon 100
- Stellar please name the big ones if you can.
cloud of "rural" stations and spaceship docks of all flavors. include various flavors such as Islands 1-3, o'neill cylinders, torroidal spin stations, anything.
Aggregate total population near 100 million
politically like the early US, very fractured localist governance but with a shared pioneering spirit. except the frontiers are some assembly required

Jändjatali

Jändjatali is Ypsilos' fourth planet, the most massive of its terrestrial bodies. Despite its somewhat high gravity, the world retains the highest population and largest industry exports of the system. Mass driver infrastructure is widespread, reducing costs of rockets that would otherwise be untenable for regular cargo launches. Eidonic Inertial Warding technology is commonly used by passengers to make lifting off the planet easier, despite its energy costs. The extra difficulty arises from Jändjatali's atmosphere, which is at about six times standard atmospheric pressure at the lower elevation regions. The taller peaks of the planet are where logistical centers prefer to launch from, despite the much colder temperatures.

Jändjatali is classed as "semi-habitable" in most rankings of the galaxy's worlds, from a carbon-water species' standpoint anyway. At an average temperature of -60°C, the noontime sun is not able to melt the water ices collected throughout its regions, and its vast plains of rock and sand form an uneasy tectonic arrangement. Heated tidally by its moons Ruhnu and Kihnu, however, ephemeral meltwater lakes exist in the planet's volcanic provinces, fueling the weather cycle and supplementing the sandy clouds with enough icy vapor to keep weather patterns primarily snowy. These clouds tend to gather on the afternoon half of the day side of the planet and precipitate throughout the night.

Because of its very low axial tilt, Jändjatali has almost no seasonality. Its moons create prominent occultations of the sun once per orbit. "Season-like" climate bands instead exist along the domains of tectonic vents, which make up the primary tectonic processes of the planet. Plate motions stretch out these provinces into long irregular mountain ranges, headed at one end by a rift valley and thermal province and at the other by collisional peaks. The hottest of these volcanic regions has an average groundwater temperature of 4°C during the daytime.

"super-mars" freezing desert planet
has water ice that melts and evaporates in the daytime in volcanic regions, falling back as snow
two major moons, Ruhnu and Kihnu, cause big ol tidal volcanism
most populated body despite high-G. Mass drivers and skyhooks and launch loops take care of most product launches and EIW works for ships leaving
mining of both metals and volatiles for use in inner system
mmm yes buff gym planet everyone so buff and big and strong

Kiviloo

Lower-gravity, lower atmosphere, lower temperature. hydrocarbon volatile mining
Much easier on the bones, much lighter on the economy
stellar and/or duo take over for this one idfk what to do with it

Valgejõe

a good old classic ICE GIANT. ammonia harvesting and shit
not really much going on but its got moons! irradiated ones cause of Tapa but moons!
Stellar is taking over this one
Moon Järiste has subglacial life. likely unknown to everyone

Governance

at least 2 or 3 independent nations, Taevaskoda is a loose alliance of "provinces" and states
Commonwealth of Aggregate Aylathiya claims some dominion, but they really got only a little influence

History

early colonization was probably sometime in the 7000s? it's meant to be something of a frontier system
subjugation by the CAA that wasn't too eventful because well. cmon they had basically nothing
one way or another the Aziz-Arsu constellation gets opened to them. Do they start it? does Aurelios? does Nabunasiir?
either way this causes their economy to begin properly growing and life gets easier
duo please connect this with whatver the CAA is doing

@@ Line 36: / Line 36: @@
 | rotation_period = 20.9 hours
 }}
-'''Ypsilos''' {{IPA|[ˈy.psi.los]}}, sometimes spelled '''Üpsilos''', is a white star on the edge of '''Aggregate Aylathiya'''.
+'''Ypsilos''' {{IPA|[ˈy.psi.los]}}, sometimes spelled '''Üpsilos''', is a white star on the edge of '''[[Aggregate Aylathiya]]'''. With less than half a billion years left on the main sequence, the star is steadily increasing in activity. The system is high in metal saturation, which gives its planets both a great economic advantage and stronger magnetic dynamos.
+Ypsilos is one of three stars on the linear '''Aziz-Arsu''' [[Hyperlane (Cosmoria)|constellation]], a relatively new connection made between '''[[Zalanthium]]''' and Aggregate Aylathiya. With just one system between itself and '''[[Aurelios]]''', the richest star in Zalanthium, the system is culturally influenced by both arms in almost equal amounts.
-* technically subject to AA governmental bullshit but not really enforced
+* CAA pretends they control the system, but don't have any real enforcement
 * slight role as "bridge to Zalanthium" but not anything substantial
+* system was colonized, no native life except for Järiste's unknown subglacial stuff
-* NO HOMEWORLDS!!! the only life is Järiste's stupid subglacioids and they're probably not even sapient. they're not even relevant!!!
+* Eestium somewhere? possibly the only single mine of it in the universe?
 == Planets ==
 === Liivakünka ===
-[[File:Liivakünka.png|left|thumb]]
+[[File:Liivakünka.png|left|thumb|Liivakünka on a rare cloudless day]]
 Liivakünka is the innermost planet of Ypsilos, generally considered to be the harshest of its worlds. A tidally locked desert with a thin carbon dioxide atmosphere, the substellar point reaches an astonishing 340°C, while the night side is well below the freezing point of water. This, combined with its somewhat eccentric orbit caused by Hiiumaa's influence, makes any settlements limited to narrow bands by the kinds of climate control they have access to. The largest city on Liivakünka, Kullamägi, ranges from a temperature of 12°C to -45°C throughout the planet's 77 day year.
+* terrible winds, less terrible pressure, horrendous seasons
-* original arrakis plan out the door man. this shit so much more intense depending on where you are
-* winds go crazy but low atmosphere makes it not nearly as bad
 * people can actually live on the night side quite comfortably! probably not too terribly populous but swagever we can figure out something for them to do. evil agriculture perhaps
 === Tärivere ===
-[[File:Tärivere.png|left|thumb]]
+[[File:Tärivere.png|left|thumb|Tärivere, the harshest of Ypsilos' planets]]
-'''Tärivere''' is the least massive of Ypsilos' planets, barely above the threshold of dwarf planet status. It is nearing tidal lock, with a long rotation period of over six standard days. Tärivere is the most metal-rich body in the system, which combined with its lack of atmosphere and low gravity makes it a very profitable mining world. The temperature variation is worse then Liivakünka, though, with night side temperatures reaching cold enough to freeze nitrogen at below -200°C and day side temperatures scorching residents at over 320°C. The unfiltered ultraviolet rage of Ypsilos' spectrum does not help habitation efforts either.
+'''Tärivere''' is the least massive of Ypsilos' planets, barely above the threshold of dwarf planet status. It is nearing a state of tidal lock, with a long rotation period of over six standard days. Tärivere is the most metal-rich body in the system, which combined with its lack of atmosphere and low gravity makes it a very profitable mining world. The temperature variation is worse then Liivakünka, though, with night side temperatures reaching cold enough to freeze nitrogen at below -200°C and day side temperatures scorching residents at over 320°C. The unfiltered ultraviolet rage of Ypsilos' spectrum does not help habitation efforts either.
 === Hiiumaa ===
-[[File:Hiiumaa.png|left|thumb]]
+[[File:Hiiumaa.png|left|thumb|Hiiumaa during its planetary winter]]
-'''Hiiumaa''' is the largest planet in the system, a hazy mauve gas giant with an orbit that keeps it well within the temperate zone of Ypsilos. Its clouds are primarily water and ionized vapors.
+'''Hiiumaa''' is the largest planet in the system, a hazy mauve gas giant with an orbit that keeps it well within the temperate zone of Ypsilos. Its clouds are primarily water and ionized vapors. As the year advances, the giant's eccentric orbit causes significant temperature variations, with the atmosphere being anywhere from 4 to 50 degrees C. During the summer, the water clouds condense less and a violet haze takes over much of the atmosphere. In the winter, stronger bands of white are visible.
+Hiiumaa's axial tilt is quite extreme, stable at around 60 degrees.
 As Hiiumaa has dense rings and no major moons, the radiation belts typical of gas giants are notably absent.
@@ Line 65: / Line 69: @@
 * no major moons somehow, do not worry
 * avg temp goes from 4 to 50 C, eccentric orbit
+* about a 60 degree axial tilt WOW
-* gases mined and farmed for shit, rings somewhat mined for rock as well, minor moons broken down and engineered for Taevaskoda
+* gases mined and farmed for the typical stuff (duo explain), rings somewhat mined for rock as well, minor moons broken down and engineered for Taevaskoda
 ==== Taevaskoda ====
-'''Taevaskoda''' is the main industrial project of Ypsilos' people. A great constellation of massive space stations and small, all orbiting in Hiiumaa's shielding magnetosphere.
+'''Taevaskoda''' is the main industrial project of Ypsilos' people. A great constellation of space stations large and small, all orbiting in Hiiumaa's shielding magnetosphere. As with most settlements in the system, climate control technology is of great priority, needing to withstand the variable insolation throughout their parent planet's year.
+The largest twenty stations of Taevaskoda have a loose alliance, making up about half the population of the total assemblage at over fifty million. Their standardized spin-gravity is 0.75 G, significantly less than Jändjatali's gravity but greater than the next largest planet's.
 * roughly 20 stations that combined make up a large population of like 50 million. babylon 100
+** Stellar please name the big ones if you can.
-* cloud of "rural" stations and spaceship docks of all flavors. im talking tycho, mini o'neill, the fuckin island 1 balls, ISS type shits, ''everything''.
+* cloud of "rural" stations and spaceship docks of all flavors. include various flavors such as Islands 1-3, o'neill cylinders, torroidal spin stations, anything.
 * Aggregate total population near 100 million
+* politically like the early US, very fractured localist governance but with a shared pioneering spirit. except the frontiers are some assembly required
 === Jändjatali ===
@@ Line 83: / Line 92: @@
 * has water ice that melts and evaporates in the daytime in volcanic regions, falling back as snow
 * two major moons, Ruhnu and Kihnu, cause big ol tidal volcanism
-* most populated body despite high-G. Mass drivers and skyhooks take care of most product launches and EIW works for ships leaving
+* most populated body despite high-G. Mass drivers and skyhooks and launch loops take care of most product launches and EIW works for ships leaving
 * mining of both metals and volatiles for use in inner system
 * mmm yes buff gym planet everyone so buff and big and strong
@@ Line 97: / Line 106: @@
 [[File:Valgejõe.png|left|thumb]]
-* fucking ICE GIANT. ammonia harvesting and shit
+* a good old classic ICE GIANT. ammonia harvesting and shit
 * not really much going on but its got moons! irradiated ones cause of Tapa but moons!
+* Stellar is taking over this one
+* Moon Järiste has subglacial life. likely unknown to everyone
 == Governance ==
@@ Line 106: / Line 117: @@
 == History ==
+* early colonization was probably sometime in the 7000s? it's meant to be something of a frontier system
+* subjugation by the CAA that wasn't too eventful because well. cmon they had basically nothing
+* one way or another the Aziz-Arsu constellation gets opened to them. Do they start it? does Aurelios? does Nabunasiir?
+* either way this causes their economy to begin properly growing and life gets easier
+* duo please connect this with whatver the CAA is doing
 ----
 [[File:YpsilosMap.png|1100x1100px|thumb|center]]