Coruscant (pronounced /'kʊ.ɹə.sɑnt/) is a fictional planet in the Star Wars universe. It first appeared on screen in Star Wars Episode I: The Phantom Menace, but was first mentioned in Timothy Zahn's Heir to the Empire. An ecumenopolis, it was renamed Imperial Center during the reign of the Galactic Empire and Yuuzhan'tar during the Yuuzhan Vong Invasion. The adjective form of the planet name is Coruscanti.
Coruscant was the capital of the Old Republic, the Galactic Empire, the New Republic, the Yuuzhan Vong Empire and the Galactic Alliance at various times. It is generally agreed that Coruscant is the most important world in the galaxy, evidenced by the fact that its hyperspace coordinates are (0,0,0). The galaxy's main trade routes—Rimma Trade Route, Perlemian Trade Route, Hydian Way, Corellian Run and Corellian Trade Spine—go through Coruscant, making it the richest and most influential world in the Star Wars galaxy.