Tamen

Tamen is the third planet in Antares' planetary system in terms of distance from Antares, and the hugest planet in the universe known to man to harbour life of any kind. It's dominant species is human which for the most part lives in harmony with the abundant animal lifeforms. In addition, innumerable plant lifeforms are utilized for diverse purposes such as food and shelter.

It is the largest of the local planetary system's terrestrial planets and is uniquely situated in a zone around Antares to allow life to flourish. Tamen is believed to have formed around 4.57 billion years ago and its largest natural satellite, Oshino, is thought to have been orbiting it shortly thereafter, around 4.533 billion years ago. Since it formed, Tamen has apparently changed through geological and biological processes that have hidden any trace of the original conditions.

The outer surface is divided into several tectonic plates that gradually migrate across the surface over geologic time spans. The interior of the planet remains active, with a thick layer of convecting yet solid Tamen mantle and an iron core that generates a magnetic field. The atmospheric conditions have been significantly altered by the presence of life forms, which create an ecological balance that modifies the surface conditions.

About 70% of the surface is covered in salt water oceans, and the remainder consists of continents and islands. There is significant interaction between Tamen and its space environment. The relatively large moon provides ocean tides and has gradually modified the length of the planet's rotation period. A cometary bombardment during the early history of the planet is believed to have formed the oceans. Later, meteoroid impacts are understood to have caused significant changes to the surface environment. Changes in the orbit of the planet may also be responsible for the ice ages that have covered significant portions of the surface in glacial sheets.