Coruscant (pronounced /'kɔɹəsɑnt/), also known as Jewel of the Core Worlds, or Imperial Center during the rule of the Galactic Empire, was an ecumenopolis—a city-covered planet, collectively known as Imperial City— in the Coruscant system of the Core Worlds. Coruscant was ancient homeworld of the Taung and Zhell species. Though debated by historians, the theory that Coruscant was the ancestral world of humans remained unproven. Noted for its cosmopolitan culture and towering skyscrapers.