With a diameter of 11856.6 km Celeste (RSC 8440-0-3-173-146 in 9.7.4 patch 5), a temperate E-Class world, is the fourth planet in its system. It has gravity practically identical to that of Earth. It has a semimajor axis of 1.1 AU and an orbital period of 1.04 years. It originally had a day length of 15 hours and 24 minutes according to the ancient databanks but after terraforming was complete it had a more Earthlike day.
Along with the system it has an age similar to that of the Sol System at 4.7 billion years. It has no moons.
With an axial tilt of only 4°27’ there are barely any seasons on Celeste, resulting in a massive equatorial desert and two large polar ice caps. Originally it had an atmospheric pressure of 0.1 ATM but terraforming made it more Earthlike. The mean temperature of the planet is warmer than that of Earth at 24.3 °C.
The planet does suffer from large hurricanes which ravage the native forests and the human cities.
The planet was discovered in 10012 by the Bernard’s Galaxy Colonization Mission which was launched over a millennium before. The colonists chose Barnard’s Galaxy because of its relative closeness. They launched from the edge of the Milky Way and placed themselves in stasis. They aimed for the center of the galaxy.
When they woke in 11450, they found themselves in the irregular galaxy. They then set to work searching the nearby stars for habitable planets and got lucky. Near the center of the galaxy was a planet that was nearly a perfect Earth analogue. They found a world that could be a garden world with only half a century of terraforming. The lifeforms on the planet would hardly be affected.
By 12065, terraforming was completed and the first post-terraforming colonies were established. They decided to try and attempt to build an interstellar civilization themselves like the Federations of United Star Systems, but it ended up failing due to the greater presence of the FUSS nearby.
For a hundred years, the people lived peacefully. They build hundreds of drone ships to scour the galaxy for habitable worlds and to catalogue and maybe inhabit said worlds.
However, due to the terraforming, the Celestians were plagued by a disease that emerged when many ancient flying reptilian creatures were awoken due to the change in the atmosphere, both of which sent them back technologically reminiscent of pre-industrial medieval societies back on Earth. Their planetary government fractured, leaving small city states in the massive cities. Over the next thousand years humans on Celeste lived in their massive cities in fear of the plague and the creature which they had named Wyverns.
In 11251, an expedition outside the cities discovered a cave which contained strange crystals that, when embedded in the skull of a live Wyvern made them extremely suggestible and trainable. One after another kingdom after kingdom began to head out into the wilds of their world, capturing and training Wyverns. The Age of the Wyvern had begun as with the danger of the Wyvern attacks gone and the entire human population now immune to the strange plague, the Looking Glass Wars were no longer needed.
The Wyvern Wars were long and bloody, lasting for over 120 years. Many people and Wyvern died in those wars.
When each kingdom realized that the wars were meaningless they met in a neutral location in a desert, an ancient ziggurat from a long dead human civilization. They signed a tentative peace treaty and began to rebuild their kingdoms.
As this went on, the fusing of the crystals to the Wyverns seemed to accelerate their evolution in terms of cognitive abilities. This was noticed with concern and curiosity by the humans. Most began to try and teach the Wyverns human speech. With each new generation the Wyverns got smarter.
Their intelligence grew until it began to reach the intelligence of their human companions around the year 11874, where it began to slow down. By this time the humans and Wyverns had become full-fledged partners.
Contact with the FUSS was reestablished in 12960, when an exploratory vehicle from the FUSS crashed landed near a larger city state. Curious about these strange humans who flew without a Wyvern, both humans and Wyvern from each city state sent representatives to Earth. They were astonished by the technology. The Wyverns even sent some of their best to start a colony in the Milky Way.
Thanks to contact with the FUSS, technological advancement sped up on Celeste until they regained their interstellar routes. They established a trade deal with Eden, bargaining for Star Beasts as a means of interstellar travel.
The planet's kingdoms began to fuse into one major kingdom, the Kingdom of Celeste, and began to spread among the stars, settling and terreforming other worlds.
While technologically advanced, Celeste is still a nominal kingdom with a king who claims to trace his roots, back to the original first King of Celeste. The planetary population is around 14.6 billion.
The plant and animal life, like most E-Class worlds, are carbon based and similar to those on other worlds. One creature of note is the Wyverns, which slightly resembles dragons of Earth myth. They have a high level of intelligence and are extremely loyal to their human neighbors.