Krania is an average-sized federation-controlled frigid ice giant situated in the Lochia System of Anthrovian Cosmos within the Palioxis Starfield. It is the seventh planet of it's respective system, and the most researched out of the eight planets in it's planetary system. It is one of the first ten Human-discovered gas/ice giant worlds that have a complex ecosystem beneath it's clouds.
Krania is home to only one atmospheric city, which has been named the Kronos City. While the only one, the city is absolutely massive, measuring roughly a thousand kilometers in size. This city has a population of around six billion inhabitants, mostly situated in dense urban areas, while some inhabitants have a more rural and idyllic lifestyle in specialized farming sectors.
Krania has 56 moons, but only two of them are spherical. They have been named Prometheus and Xantheon. Xantheon even has exotic multicellular life on it's surface, and is of interest to many scientists for it's abnormally fast evolution. A very dim set of rings orbits Krania, which are most of the time completely ignored by any tourists.
In the far past, a major planetary object collided with Krania, causing it to have it's abnormal and unique axial tilt of 97 degrees.
Krania's main tourist attraction is it's diverse and complex ecosystem in it's atmosphere, extending even to the outer atmosphere. Many creatures of all shapes and sizes roam the deep and thick clouds of Krania. These lifeforms are vastly different from terrestrial organisms. Many creatures utilize alien ways to gather chemical elements, such as energysynthesis.
The Kronos City is the only urban center situated on Krania, located near the equator as a large-scale domed metropolis floating in Krania's outer atmosphere.
The dome of heavily pressure-resistant glass is required to protect against the deadly atmosphere of Krania, and also it's immense winds, which sometimes blocks entrances to the Kronos City as a result of the rapid storms that can happen on Krania.
The shape of Kronos City is spherical, with the average height being two kilometers and diameter being around a thousand kilometers, dwarfing even the largest atmospheric cities on most gas/ice giants.
In the ceiling of the dome, many airlocks exist, which are used for ships to primarily travel in or out of the city. The average monthly count of ships leaving and entering the city is around a million, as Kronos City is a fairly popular area for tourism.
The Kronos City has a population of six billion Human inhabitants. These inhabitants are scattered throughout the many skyscrapers of Kronos City, with many adapting a rural and idyllic style, farming many of the smaller creatures present in the atmosphere of Krania in dedicated farming sectors.
Krania has a set of 56 moons in total, over half of which are less than ten kilometers in size and only two are spherical. Most of the dwarf moons of Krania have thought to have been captured asteroids. Two spherical moons orbit Krania, named Prometheus and Xantheon. The moons orbit along Krania's orbital plane, which means they share their parent planet's severe rotational tilt.
The first spherical moon, and the 36th moon, Prometheus is a frigid icy world covered in a layer of water-ice with a shallow, lifeless subsurface ocean below, blanketed by a pink atmosphere caused by the absence of argon.
The second spherical, and the 42nd moon, Xantheon is an unique one, having it's own set of large rings, caused by a collision with another large moon in the past. Xantheon has a high amount of hydrocarbons, most of them concentrated in seas. The absence of organic compounds has given Xantheon a fully-fledged, complex ecosystem with exotic biochemistry.
Other moons worth mentioning are Thealia, an asteroid moon around 54 kilometers in size that orbits Krania from a distance of a thousand kilometers, and is soon passing the roche limit, and will be destroyed. An other unique irregular moon is named Fortress, and is essentially an asteroid turned into a fortress of defense around Krania.
Krania has a climate with extreme seasonal variations due to it's unusual axial tilt. As a calmer than average ice giant, the average windspeeds on Krania are 400km/h on average, with some storms having windspeeds that can go up to 2000km/h. Krania has a global temperature -125°C, with the poles sometimes being a hotter and equator being colder, as a result of Krania's abnormal axial tilt.
Biology & Ecology
Krania is host to a complex and highly diverse ecosystem residing all the way from the near-bottom of it's atmosphere to the outer cloud layer. All life on Krania is carbon-based, like most lifeforms in the universe. The organisms do, however, use ammonia as a solvent, instead of water which is usually thought to be much more common as a solvent compared to ammonia. Life on Krania inhables hydrogen and exhales methane, which is common on gas giants with life.
Since nearly no starlight penetrates the thick clouds and reaches the most life-filled regions, photosynthesis cannot take place in any way or form. Instead, living organisms obtain their energy by two ways. The simplest and most prevalent method is kineticsynthesis, in which life obtains its energy from the environment by converting the kinetic energy of rapid winds into organic chemicals such as acetylene, ethylene, and ethane. This is made possible by microscopic organelles, which are comparable to cells seen in most animals. This process is common throughout the universe, with other gas giants with life such as Taranis being entirely reliant on kinteticsynthesis. The process also necessitates the presence of hydrogen and methane, both of which are abundant in Krania's atmosphere. Many species of predators, parasites, and detritivores, on the other hand, do not generate their own energy.
The secondary way of getting organic chemicals like acetylene, ethylene, and ethane is energysynthesis, which is also the rarest way of getting organic chemicals. This process involves a creature using it's tiny organelles to convert the energy from lightning bolts to organic chemicals through extremely complex chemical reactions. This is more common in the lower layers of the atmosphere however, where lightning is way more prevalent than in the upper layers.
Krania has few different habitats in comparison to otherwise vibrant and diverse terrestrial worlds, and as a result, its life is far less diverse, while being vastly more numerous. Because natural barriers such as oceans and mountains are nonexistent, almost all species can be found almost anywhere on the planet. This is due to the fact that changes in latitude do not result in temperature variations, as all heat originates deep from the planet's interior. Because of the planet's rotational flatness, there is a tiny increase in gravity at higher latitudes, although this does not effect life sufficiently to account for what could be termed a distinct habitat. However, latitude still generates two distinct biomes which are zones and belts.
Zones and belts are comparable to rain forests and deserts in several characteristics. When the wind is blowing upwards, zones form. They appear as larger, lighter stripes in the planet's atmosphere due to the surface ammonia clouds, and they are home to the bulk of the planet's life. The ascending wind carries nutrients from below and aids creatures in staying afloat, resulting in a thriving ecosystem. Belts, on the other hand, look as dark, narrow areas with strong descending wind currents that pull nutrients and living organisms down to the planet's interior. As a result, belts are Krania's primary natural barrier, although that doesn't stop animals from passing over them when necessary.
A vertical separation of biomes is another option. Within the range where life is prevalent, temperature and pressure fluctuate dramatically, resulting in layers with considerable variations in a species composition. Some creatures have evolved to survive in the planet's upper layers, which are colder and less dense, while others have evolved to live at high pressures and temperatures closer to the planet's core. There are also those which can live across both habitats, smoothly transitioning between them when necessary. As a result, Krania's diversity of life is related to changes in depth rather than latitude. From microorganisms or chemical precursors of life present in outer space and were able to initiate life on reaching a suitable environment.