Dom’Kryo, fourth planet from the star Zvyezda and homeplanet of the Arctannians, was not always a planet of snow and ice, according to natural historians it was once a very warm place, with an average global temperature of around 300K, but at some point in time, approximately five million years ago, a disaster of global proportions occurred that threw the planet into the permanent winter it is now. Studies carried out on samples of polar ice and rock strata, judging by the high concentration of dust, ash, and heavy elements(minute traces of which, to this day, exhibit radioactive decay), indicate that it is likely the planet suffered a collision with some massive asteroid or a small planetoid, triggering significant geological upheaval and tectonic activity, such as volcanoes. All of which contributed to the effect known as ‘Nuclear Winter’, where huge amounts of radioactive dust and ash are ejected into the high atmosphere, blocking out a large proportion of the solar light and energy, causing a global cooling effect and mass extinction. In fact, it is estimated that up 80% of all animal species, and 65% of plant species alive at the time were made extinct by the rapid climate change, and the few fossils that have survived do not posses anywhere near enough organic material to generate a reliable genetic profile. Another effect of the collision and the ensuing Nuclear Winter was a massive reduction in the amount of carbon dioxide present in the atmosphere, one of the reasons for this was the mas extinction of the plant and animal life, so much of which could no longer contribute to the carbon cycle, locking it away in the rocks, sediment and what is known as fossil fuel. This effectively wrecked the green house effect which had previously kept the planet so warm.
It was also around the time of the nuclear winter that archaeologists discovered the first signs of proto-Arctannians in the equator regions, since no recent precursor species have yet to be discovered and the fossil evidence is so thin, this has lead to debate among evolutionary biologists as to whether Arctannians first developed in the equator, becoming intelligent because of the highly competitive and densely packed environment the equator became, or the more popular theory that, as indicated by the bone structure of the few examinable remains, they first developed around climes far north or south of the equator, which at the time were mild throughout the year, but where driven to the equator by cold. A very small minority of scientists, and a great deal of conspiracy theorists, think that the lack of fossil evidence, sudden emergence, similar appearance to many alien species, and the fact that the closest genetic match on the planet is only 63%, indicates that our species is actually alien to the planet of Dom’Kryo. They do not of course, present any theories as to how ‘we aliens’ got here in the first place. The first traces of what can be considered modern Arctannians appeared approximately five-hundred-thousand years ago