Deinazephanais

Deinazephanais, derived from Neizephanais Deinón Azephanais, meaning Our Planet, sometimes refered to as Deinos Eú and given the scientific classification of c1B, was a planet in a solar system known as Ceixeús and orbited the star known as Ein-Ceixos. It was the only planet in its system containing significant amounts of the liquid water thought necessary for life to exist and was the home of the Aziphox.

Name and Etymology
The Neizephanais noun Deinazephanais was a corrupted form of Deinón Azephanais, literally meaning Our Planet, itself from Old Neizephanais Deinónasephanais. Deinónasephanais had cognates with ??? ??? and ??? ???. These were all ultimately derived from ??? ???.

Formation
It was estimated by Aziphox scientists at the time of ??? that Deinazephanais had started to come together for near to two billion years, forming almost simultaneously to all the other planets and its star, Ein-Ceixos. In a process that lasted several million years, the dust and rock collected around a centre of mass appearing at roughly 3.2 AU from Ein-Ceixos, forming a primordial planet.

Atmosphere and Liquid Water
The atmosphere of Deinazephanais was believed to have come about through a process of volcanic outgassing, in which gases from within the planet were blasted into the atmosphere. This original atmosphere was mostly dust and greenhouse gases, trapping much heat within the planet. The heat was such that any water existed as vapour in the dense atmosphere.

Gradually, the atmosphere began to cool and become less dense, as the greenhouse gases were replaced by oxygen and nitrogen. This co-incided with Ein-Ceixos reaching a mass in which the habitable zone was pushed further back, to 3.2 AU, matching Deinazephanais' orbit, and also the formation of the planet's core, which stopped this new atmosphere from being stripped away by solar winds. These factors allowed the water vapour in the atmosphere to condense and form liquid water.

Life
At the time of ???, several theories had been proposed by the Aziphox regarding life's formation on Deinazephanais. The most accepted theories at that time were abiogenesis and panspermia.

Abiogenesis dictated that life formed as amino acids on Deinazephanais following some form of catalyst (in the form of lightning or some other burst of energy). This amino acids formed polymers known as proteins, which joined together to create the first single-celled organisms. These single-celled organisms diversified, becoming the various creatures and plants of Deinazephanais and, eventually, the Aziphox.

Panspermia, on the other hand, dictated that life formed elsewhere in the universe, perhaps through abiogenesis on another body, before being transported to Deinazephanais through asteroids or, even, through the space-crafts of an advanced and ancient civilisation. These alien single-celled organisms would have evolved and changed, advancing in much the same way as it would have under abiogenesis.

Atmosphere
Deinazephanais had an atmosphere that was primarily nitrogen in composition, with twenty percent of the atmosphere being oxygen. There were several other gases that made up this atmosphere, but they made up a total of less than three percent. This atmosphere extended up to a level of one hundred and fifty kilometres, after which an object would be in space, as defined by the scientists of the planet in 8 ED.

Oxygen was originally introduced to Deinazephanais through volcanic activity. The oxygen was driven from the planet's mantle into the atmosphere, where it joined the carbon dioxide and other gases. The oxygen levels of this early atmosphere were very minute, accounting for less than one percent of the total atmospheric content.

The oxygen in the atmosphere increased dramatically with the formation of the first single-celled organisms. As by-products, the early bacteria produced oxygen. The massive amounts of bacteria contributed to a great rise in the level of atmospheric oxygen. In fact, this sudden and dramatic rise was enough to cause a mass extinction of bacteria, that, despite producing oxygen, were anaerobic in nature. When aerobic bacteria evolved, life was able to develop further and a high-oxygen atmosphere became preferable for life on Deinazephanais.

Magnetic Field
The magnetic field of the planet greatly increased its habitability. Without a strong magnetic field, the planet would have lost its atmosphere to solar wind and would have thus been unable to retain heat. The presence of a magnetic field allowed the planet to remain warm enough to harbour liquid water and, due to this, life.

The magnetic field of Deinazephanais originated from its core. The core of the planet generates electricity through the motion of highly-conductive fluids, in turn forming the magnetic field. The core is believed to have formed on Deinazephanais roughly three billion years before the time of ???, as shown in rocks uncovered by Aziphox scientists.

Moons
The planet had two large moons, the largest of which, Eindinus orbited Deinazephanais with a semi-major axis of 512,400 km and passing the planet at 490,400 km on its closest approach. The smaller moon, Aseindinus, had an orbit that was located much further out than Eindinus, though, at times, it came even closer to Deinazephanais. Eindinus was large enough to hold a small atmosphere, but, due to various factors, it was a barren and desert land. Aseindinus was cold, but was believed by scientists at the time of ??? to have held significant amounts of ice at its poles.

Asteroids
Eindinus and Aseindinus were not the only natural bodies in orbit around Deinazephanais. Several asteroids of significant size orbited the planet at a distance 0.03 AU, with the closest and largest, Xephidos, having a semi-major axis of 0.028 AU. These distances were just inside Deinazephanais' Hill Sphere, suggesting that they were captured only a few thousand years before the time of ???. This vast distance meant that their orbits were very unstable.

Days, Months and Years
Deinazephanais orbited its sun in 4.82 years. Its speed of rotation was such that it required approximately thirty-six hours to complete one rotation. Thus, one day on Deinazephanais was described as thirty-six hours. Deinazephanais completed its orbit in just under one thousand, one hundred and seventy-three Deinazephanais days (the exact figure was 1172.866 days, with .8666 translating into twenty nine hours, fourteen minutes and twenty four seconds), or around one thousand, seven hundred and fifty-nine twenty-four hour days.

Its closest and largest moon, Eindinus, required over thirty-four and a half twenty-four hour periods to orbit Deinazephanais, or roughly twenty-three Deinazephanais days. Eindinus completed over thirty-six and a half orbits in the time it took Deinazephanais to complete its orbital period, giving thirty-six, thirty-four day months, though this figure differed from how the Aziphox recorded their monthly periods.