Centauri Prime is a terrestrial planet, specifically the homeworld of the Centauri race, and the seat of government for the Centauri Republic, located in Sector 130. Centauri Prime is a temperate world with an oxygen/nitrogen atmosphere, vast oceans and only a handful of large landmasses. Like other worlds found in other universe, Centauri Prime was home to two distinct sentient races, the Centauri and the Xon. Both evolved around the same time but on different continents, remaining separate until one or both developed the technology to cross the oceans. When they finally did meet, they began competing with one another for land and resources, culminating in a vicious conflict that became known as the War of 20 Million Deaths that only ended when the Xon were finally wiped out by the Centauri in the Age of Uncertainty.