Coruscant is an ecumenopolis planet in the fictional Star Wars universe. It was first described in Timothy Zahn's 1991 novel Heir to the Empire. The planet made its first on-screen appearance in a scene added to Return of the Jedi for its 1997 re-release. It has gone on to become an important location in the Star Wars universe and appears frequently in Star Wars media. In-universe, Coruscant is a politically and strategically important planet, serving as the capital and seat of government for the Republic and Empire, as well as the headquarters of the Jedi Order. It is typically depicted as a bustling, yet highly stratified planet-spanning metropolis. Throughout the city's centuries-long development, new city blocks were built on top of old ones, forming levels. Coruscant has 5127 levels, with the 5127th being the wealthiest and the 1st being the poorest.