Earth-like planet and Omega Centauri. Computer illustration of a view across the rocky surface of an alien planet towards an Earth-like planet (right) on the horizon and the stars of the Omega Centauri globular cluster in the background. Earth-like planets capable of supporting life are found only in a star's habitable zone, a region around a star where the surface temperature of a planet is suitable for liquid water. Omega Centauri contains several million stars and is located around 17,000 light years from Earth, in the constellation of Centaurus.