What are some of the notable planets and locations featured in *Tales of the Jedi*?

Notable planets include Onderon (and its walled city of Iziz), Dantooine (a Jedi training ground), Korriban (the ancient Sith homeworld), and Ossus (a Jedi library planet that suffers a devastating catastrophe). These locations serve as backdrops for key events and provide context for the ancient history of the Star Wars galaxy.