Orbis is a hot hell world located in orbit around Spatium, the last planet of the Hope System. Before it became this lifeless desert, it would be a cold ice world, and later a temperate Titan world terraformed by the Nagala, also making it home to the Nagala Embassy for the Hope System.
It is the largest moon in the Hope System, with it even being larger then the planet of Valles. It is so large, it has its own independent magnetic field, stretching million of kilometers into space.
The Moon's geography is fairly flat, with few mountains or hills. As well, very few impact craters are on the surface as asteroids usually disintegrate before reaching the ground.
Originally, the surface of the moon was a vast landscape of frozen nitrogen, broken up by large cracks and bumps across it.
Then, it would be terraformed by the Nagala, melting the frozen nitrogen and forming large nitrogen oceans and artificial continents, as well as many islands.
Much alike its similar sister world, Blekiur, Orbis' climate has changed several times throughout its lifetime. From a cold ice world, to a temperate titan, then finally a hot desert with large hurricanes constantly raging across its surface.
It also experiences large amounts of tidal forces and radiation from its parent gas giant.
During the Etymology Era, Orbis would have an absolutely massive population of around eighteen trillion people. This was due to the Nagala's terraforming of the moon, causing several trillion Nagala to move to the moon, as well as the large Havenite population already living there.
After their destruction, the Human Alliance of Ambrosia would construct large floating colonies in the upper atmosphere where it is relatively hospitable. The Ambrosia Alliance of United Systems also look to terraform the moon for themselves at some point in the future.
As it was home to the Nagala Embassy, the moon's culture operated very similar to various other worlds under the Nagala's control. Most notably, its culture was alike to their home and capital planet.
Afterwards, the native humans and the various other Ambrosian Races' culture would operate as a sort of checkpoint area, as any ship entering within the Hope System would have to be vetted by the inhabitants of the moon before entering planet Haven.
Orbis would form from the majority of the icy debris leftover during the formation of its parent planet, Spatium in 4,495,109,000 BCE. During its early history, the moon was a large world made up of frozen nitrogen. This surface would be constantly tugged by massive amounts of tidal forces from Spatium, leaving it scarred and rigid.
Much later, the moon would be colonized by the Havenites in 2,489,300,000 BCE, as they would establish large elaborate cities across its frozen cracks and scars.
The moon would eventually be terraformed by the Nagala in 2,488,109,000 BCE. This was because they and the Havenites would continue to be at each others throats, even after their induction in the Etymology, this caused the larger Etymology to force the two to make peace with each other in some way. As such, the Havenites relinquished the moon as an area where the Nagala could colonize themselves within. Which they did in the form of melting the moon's icy nitrogen surface, forming large liquid nitrogen oceans not unlike those of their home world. Causing the native Havenites to construct large buoyancy platforms underneath their cities so that they would float.
Afterwards the C.Y.R.E.X would destroy all settlements across the moon by heating the moon's atmosphere, causing the nitrogen oceans to evaporate, leading to a runaway greenhouse effect that would cause the atmosphere to thicken and trap massive amounts of heat within itself.
Later still, the Human Alliance of Ambrosia would discover the moon in 10,265 CE, and once it was determined that the moon's upper atmosphere was fairly hospitable, large floating colonies would be constructed all across it.