An Orbital Solar Energy Transfer Satellite (also known as an Orbital Mirror, Mirror Station and Solar Mirror) was essentially a large mirror used to focus warmth and sunlight from Coruscant's tiny sun on the planet's extreme northern and southern latitudes, warming the environment by a few degrees to make more of the land area on the ecumenopolis habitable. These space stations would be used by the Galactic Republic, Galactic Empire and the New Republic.