In the version of Star Wars: The Rise of Skywalker that we saw, Kylo Ren finds the Emperor on a planet called Exegol, that we had never seen on the screen before. But according to the book The Art of Star Wars: The Rise of Skywalker (via ScreenRant) in one early version of the script, the Emperor was discovered not on a new planet, but on Coruscant. The planet that was the center of both the Galactic Republic and the Empire which followed it. As author Phil Szostak explains in the book’s text…