Centauri IV is the fourth planet in the Alpha Centauri system. The planet is home to a large human colony located across the entire planet. The world was colonized by the humans in 2152 and was one of the first fifty out of system planets to be colonized by the humans. By 2160, the planet was one of sixty-two planets that belong to the United Earth government. When Earths war with the Fen Domar began in 2468, the planet was heavily fortified by the Humans; weapons platforms were installed by the humans and heavily upgraded, no ship stood a chance. In 2470, they discovered an ancient temple under a cliff which had fifteen different individuals frozen in ice (The Avatar Returns).