Lailybai

(*I have found that I usually have nothing much to say about a world's atmosphere unless it is a special color or composition, or both.*)

## Additional Information

### Life

Organic multicellular (marine, terrestrial)

## Lailybai's information

### Technical information

This world has an equatorial diameter of 7189.88 miles, with it having a mean diameter of 7172.28 miles, and a polar diameter of 7137.22 miles. The oblateness of the planet is 0.0073237, with the mass of the planet being 0.72012 M⨁, or 4.3008\*10^24 kilograms, and the density of the planet is 5.3412 grams per cubic centimeter. The insolation of the planet is 0.89933, with the effective temperature being 223.55 kelvin, and the Earth similarity index is 0.971. The rotational period is 16 hours, 22 minutes, and 49.87 seconds, with the solar day being 16 hours, 21 minutes, and 28.59 seconds, additionally the axial tilt is 56\*39’58.26”. The gravity on the equator is 8.5172 meters per second, with the gravity (mean) being 8.6058 meters per second, and the gravity on the poles is 8.6905 meters per second, giving this world a gravity of ~80% - ~90% that of the Earth’s. The circular velocity is 15784.08 miles, with the escape velocity being 22322.06 miles per hour, and the age of the planet is 5.443 billion years, additionally the tidal heating is 3046.2 watts. The height of the atmosphere here is 58.77 miles, with the tropopause height being 16.09 miles, and the height of the homogeneous atmosphere is 33023.95 feet. The air density here is 14.471 kilograms per cubic meter, with the air temperature being 291.19 kelvin, and the speed of sound is 758.36 miles per hour.

The exosphere temperature is 1475.4 kelvin, with the greenhouse effect being 67.607 kelvin, and the average molar mass is 28.102, additionally the relative mass is 1.2857\*10^-5, plus the real mass is 5.5297\*10^19 kilograms, or 11.574 Earth atmospheres. Nitrogen makes up the majority of the atmosphere at 75.3%, Oxygen makes up 20.8%, Water Vapor at 2.11%, and Carbon dioxide at 1.75%. The maximum depth of the oceans is 14850.86 feet, with the average molar mass being 18.016, and the density of the oceans is 1 gram per cubic meter. The temperature is 291.19 kelvin, with the atmospheric pressure being 12.3 atm, and the bottom pressure is 397 atm, additionally the bottom composition is rock, plus the liquids here are made of both salt and freshwater. The parent of this planet is a solitary star, with the orbital period of the planet being 1.353 years. The semimajor axis is 1.2605 AU, with the pericenter / apocenter being 1.2594 AU and 1.2617 AU. The eccentricity of the planet is super low, a record 0.0001, with the inclination being -0\*29’20.24”, and the ascending node is -14\*41’04.42”. The argument of the pericenter is 241\*57’19.24”, with the mean anomaly being 70\*46’52.92”, and the longitude of pericenter is 227\*16’14.81”, additionally the mean longitude is 298\*03’07.74”. The orbital velocity is 62061.88 miles per hour, with the hill / influence sphere radii being 1018852 miles and 612761 miles, and the roche limit for satellites is 5284 miles .

### Store

#### Internals

The planet’s core is made up of nickel and iron, with the density lowering the higher up in the internal regions, and the metallic elements play a critical role in the internal composition by supplying most of the necessary material. The temperature gradient generally cools the higher up with some interruptions like lava plumes. When two plates diverge on this planet, new crust is created from mantle being pushed up onto the surface, or volcanoes. The internal composition facilitates a weaker magnetic field, not because there is nickel and iron, but because they are the heavier counterparts, and thus slow down the core, making the magnetic field weaker. What is found through seismic waves is that the planet’s mantle is heavier and bulkier. Speaking of which, because of the heaviness and bulkiness, the tectonic plates move more slowly, and with considerably more effort, making them more likely to create higher magnitude earthquakes. There are two layers, a heavy dense solid one, and a liquid heavy dense one which is hotter. Additionally, there are a few deposits of radioactive elements that influence the heat generation a little, by, of course, producing more energy.

Because of the heavier materials that comprise the core and the mantle, the volcanoes have a harder time erupting. If they do, they typically do it all in one burst, depositing large amounts of rock, which can sometimes increase the height of the volcano by a few thousand feet. While, like with most things dealing with worlds this far away from Earth, it cannot be conclusive, the fact that there is a magnetic field that does resemble one found in worlds with a working core, it is assumed that the planet does have a molten but rendered solid core. There are regions that have been found to have higher concentrations of aluminum, for example, in the more southern and northern regions, with some exceptions near the equator. Because of the planet’s heavier composition, the density is more so, but unfortunately, because of the bulky nature of the compounds, they take up more space, so the density is not affected as much, making it only slightly less than Earth’s. Also, because of the denser compounds which slow down the core and also cool it, the planet’s magnetic field is weaker. Thus, the life sustainability is lower because now the ability for radiation to pass through is higher, which lowers life expectancy and chance, but it has not gotten rid of life here.

#### Geography

This planet’s large expansive land masses are a general departure for humid terras like this one, demonstrating that you can have a garden world with even only 20% of the surface covered in water. This departure comes in from the 20% of water being put into medium to small bodies of water, the largest of which is around the size of the North Atlantic at maximum. The reason for this seems to be that this planet has weathered far fewer comets. This relative scarcity of comets and their bombardment (and thus water) has resulted in a diminished influx of water over the eons, shaping the landscape into a realm dominated by extensive land masses punctuated by seas. The water content of the planet hovers between 20% and 30% of its surface area, a small amount, more like that of Lacustrine worlds, in proportion compared to other terrae, yet sufficient to sustain a large weather system. Despite the seemingly arid numerical representation of water coverage, the planet is not that arid, it has a large system of rivers which flow long distances from mountain to sea, sustaining vibrant coastal ecosystems that would not exist without it. There are 5 continents here, all interconnected by land, and their interconnectedness fosters a common exchange of flora and fauna, which leads to several globally dominating species.

#### Climate

This planet’s climate is an unusually humid ecosystem, despite the amount of surface water. A vast expanse of the planet is adorned with lush rainforests and coniferous woodlands, reminiscent of the landscapes found in the heart of the Amazon rainforest. The humidity levels here are similar to those encountered deep within the lush greenery of the Congo Basin, defying conventional expectations given the limited presence of water—more akin to a Lacustrine world than a Marine one. The climate of this peculiar world experiences occasional interruptions to its humid and diverse conditions, By extensive arid expanses. Massive deserts, positioned proximate to the equator, with the seasons periodically subjecting the region to dramatic sand storms that add an element of dynamic unpredictability to the planetary climate. There is a hypothesis posits that the enigma of a humid climate persisting in the absence of substantial surface water might be elucidated by a harmonious interplay of underground water reservoirs and extensive river systems, plus the dispersal of the seas, covering evenly across a wide amount of space, channeling both salt and freshwater deep into the interiors of the otherwise vast, barren, and arid continents that define its landscape.

#### Biosphere

This planet’s biosphere has a biodiversity index a little lower than that of the Earth, do not be mistaken though, each continent, though connected to one another, has its own unique biosphere, consisting of thousands of species, but because of the exchange ability present and plentiful on all of the continents, certain species dominate across this planet. The ones that seem to be an “apex predator” here are a few species of what appear to be Tiger and Lion analogues, blue in skin, and sonic in speed, they have evolved to to slick through any rainforest or woodland, and most certainly the plains. Besides that, the biosphere is mostly made up of land-only terrestrial species, most of them being taller on average than LO animals here, and a bit thinner, having a higher focus on flight rather than fight. There is also a small ocean based ecosystem, mostly made up of Swordfish-analogues which thrive off of the fish that swim down and up the common rivers here, additionally, those fish are easy prey for large bird-analogues, which span several feet in wingspan, and are usually way larger than those found on Earth. Another example of that is the songbirds found on this planet, which have a lighter, thinner, body build that is hauled by a pair of large wings, some bird-analogues even have 2 pairs. Overall, the biosphere here is diverse, not as diverse as the Earth’s, but that seems to only exist because of the interconnectedness of the continents which allows for regular cross-continental exchange. The life here has generally evolved to be faster, and lighter, with a greater focus on flight rather than fight with most of the species here.

#### Atmosphere

The atmosphere on this planet stands out a bit as it is “more aggressive” than passive when compared to the atmospheres of other terrae. It is predominantly composed of a significant amount of greenhouse gas, Nitrogen. This greenhouse gas plays a contributing role  in fostering elevated evaporation rates across the planet's medium sized seas. The prevalence of Nitrogen not only contributes to the greenhouse effect but also influences the overall climatic conditions, compensating for the absence of the typical weather patterns that might have emerged under different circumstances, a normal level of primordial bombardment. Cloud cover as a result is more common, overcast days typically outnumber clear days, and normally covers around 30% - 40% of the planet’s surface. There are also no unique atmospheric phenomena found here, just a more active, and more greenhouse dependent atmosphere.

### Moons

The moon system around this world is very small, it only contains two asteroids which orbit the planet tightly, and both of them are visible from the planet’s surface.

 Mass
 Diameter
 Orbital Period

### Star System

The star system that the planet is part of is an 11 planet system that orbits a solitary yellow dwarf (G2.9 V), which has a mass of 1.0936 M⨀, with a diameter of 1.0914 D⨀, or 943593.63 miles. The star system has a asteroid belt (1st - 3rd), and an Oort cloud, an average star system that otherwise would not get that much attention besides a simple data point amongst millions.