Coruscant is a planet in the fictional Star Wars universe. It first appeared onscreen in the 1997 Special Edition of Return of the Jedi, but was first mentioned in Timothy Zahn's 1991 novel Heir to the Empire. A city occupying an entire planet, it was renamed Imperial Center during the reign of the Galactic Empire (as depicted in the original films) and Yuuzhan'tar during the Yuuzhan Vong invasion (as depicted in the New Jedi Order novel series). The adjective form of the planet name is Coruscanti.