Brimsoar System

The Brimsoar System is a barycenter-based binary star formation containing two stars of different sizes. It emits a somewhat perceivable electromagnetic field throughout, but it doesn't seem to impact the surrounding objects in any meaningful way. On a closer inspection, there are signs that around these two stars, there are much smaller objects, still in the process of forming. At the moment it currently contains 22 planets, with 11 planets belonging to each star.

Brimsoar A

Brimsoar A is the largest of the two stars making up the Brimsoar Binary Star System. It is rumored to contain a large amount of molten liquid and even glass-like solid substance within, but since proof about these rumors have not be obtained yet, this subset of information remains a rumor. Not only that, but Brimsoar A also experiences mysterious subtle periodical dimming and lighting up across a period that's roughly similar to 26 hours on Earth. Finally, along with standard solar flames, harder chunks can be sometimes seen expelled as well, presumably indicated some sort of debris of planets that have been enveloped by Brimsoar A long time ago.

The star has it's own share of gas-giants as well as lesser gas-based planets. It's habitable zone is narrow, mostly providing natural life-sustaining circumstances for just one planet. The other object sharing the habitable zone with that planet is a large gas giant. The cold zone is the most expansive part of the Brimsoar A's separate system, also having lots of moons and satellites. The cold, however, also seems to prevent lots of larger planets for actually reinforcing their surfaces, which causes them to remain as cold and frost gas giants. The hot zone contains two planets which have managed to avoid being largely melted by Brimsoar A. The second of these planets is suggested to have had a larger potential for life-sustaining environment in the past when Brimsoar A was smaller and weaker.

Brimsoar A's assortment of planets.

A1 - Apexorb: The first planet in the whole Brimsoar A sub-system. It's too hot for any faction to immediately take advantage of, but faraway ships seem to be fine with gathering data from it using probes to measure data, mostly associated with whether Brimsoar A is increasing in size and power.
A2 - Denogneiss: It is known to be birthplace of Rampantaran Republic, but not Rampantarans themselves. They fled there, because once they were sure that their homeworld would be destroyed (it wasn't). On Denogneiss Rampantarans slowly learned how to terraform planets bit by bit. They went somewhat overboard turning Denogneiss from a selena into terra.
A3 - Rontaye: A large gas giant owned by Rampantarans. On it, Rampantarans merely test out their spacefaring technology and drones to find out whether they can withstand the environment, made up from the various gases.
A4 - Cyroterm : A fertile world with remarkably low axial tilt which used to be higher in the past. Locked between extremes of cold and hot climates, lies the Cyroterm's temperate zone, populated with the largest amount of creatures. Local Rampantarans, meanwhile, make living within the less occupied tropical zone.
A5 - Synont : The actual birthplace of Rampantarans and Opyrites. At the current state, the climate has become more extreme and doesn't seem all that fertile from the space, but, in actuality, both vegetation and fauna still thrives. Synony is mostly ruled by Opyrites who mostly spend their passtime creating amazing religious lore about local wildlife.
A5.1 - Pumicarv : Synont's moon, not shown in this planet overview. It is used by Rampantarans as the first site of testing their robotic equipment. Since Rampantarans value the capabilities living organisms have, they have programmed their motherships to create robots that can evolve further. So far, it hasn't actually backfired on Rampantarans, at least not much.
A6 - Koar Alpha: The local science base of Rampantaran Technocratical Republic is located here. They seem especially focused on creating food that would taste good but also be healthy. The equipment used for it is actually using radioactive power source, but components in the atmosphere of Koar Alpha is able to bind with most of the excess radiation and cause it to sink closer to planet's core.
A7 - Qaracin: Despite it's overall freezing environment, Rampantarans have made a technological resort here. Not only do they relax here, but there is actually a whole city of hibernation domes within which Rampantarans release their insectoid bodies from the cumbersome ailments accumulated from space travel and duties.
A8 - Irwor Eta: A ring-bearing gas giant that actually contains lots of pebbles and moisture within it's atmosphere, the latter smells strongly like sea, due to the additional presence of salt known to humans. This planet is also owned by Rampantaran Technocratical Republic but nothing seems to resist the planet's atmosphere so it's being monitored from afar.
A9 - Krotnon: An planet which doesn't belong to anyone yet. Travelers from various civilized species claim to have been there and made lengthy journeys with video recordings as proof. They also claim that on this planet, despite it being so far from the star, lingers a presence of something huge... and alive.
A10 - Conglohail: The largest gas giant in Cyroterm A sub-system, it's atmosphere is made up of constant hail particles, but most of them is anything but liquid water. It is unknown if anything lives there, but there is a rumor that migratory asteroid dwelling microscopic life uses it as a temporary location in their journey.
A11 - Notocal: The last planet in the line of Cyroterm A sub-system's entourage. Despite it being effectively frozen, it seems to have lines that indicate ancient river systems of some sort, a proof of an earlier time, presumably with less frost and drought. As a result, some theories crop up, one particularly persistent is the one that some force has knocked it far away from it's star.

Timeline

0 years ABB: End of the Big Bang event

270 million years ABB: The Milky Way galaxy begins to form

3.77 billion years ABB: Brimsoar binary star system begins to form

3.77 billion years ABB: Birth of the Terran planet Cyroterm

3.82. billion years ABB: Cyroterm rings form from both the fallen and caught meteorite debris

4.1 billion years ABB: The glaciers finish forming on Cyroterm

4 242 million years ABB: Oceans finish forming on Cyroterm

4 250 million years ABB: Life arises on Cyroterm

6 598 million years ABB: Multicellular life arises on Cyroterm

7 029 million years ABB: Largest documented ocean organisms have evolved on Cyroterm

7 210 million years ABB: First sentient lifeforms on Cyroterm

7,210,013 thousand years ABB: Volcanic activity around the riftzones kill of keystone species causing mass extinctions, killing off the sentient Cyroterm's lifeforms along with lots of other species

7,253,015,592 year ABB: First arrival of Rampantaran alien explorers on Cyroterm

7,253,015,593 year ABB: Rampantaran explorers start discovering fossils of the recent extinction on Cyroterm

7,253,015,633 year ABB: Cyroterm is being inspected by the council of the Rampantaran Republic.

7,253,015,643 year ABB: Another Rampantaran explorer arrives on Cyroterm to compare notes and

make new discoveries

7,253,015,673 year ABB: Cyroterm colonized by Rampantaran Republic. The colony is named Groway.

7,253,015,703 year ABB: Artists from Groway create a statue of their Space probe Madgo on Cyroterm

7,253,015,773 year ABB: Groway government develops larger suburb societies on Cyroterm

7,253,015,803 year ABB: Groway architects develop elevated houses on Cyroterm

7,253,015,873 year ABB: Groway puts in effort to make housing designed to preserve the surrounding (recuperating) nature on Cyroterm.

7,253,016 thousand years ABB: Ecosystems are rejuvenated after the extinction on Cyroterm, despite the heavy pollution in some industrial areas

9,730 million years ABB: Future humans discover Cyroterm and document it.