<P> Dagobah is a star system in the Star Wars films The Empire Strikes Back and Return of the Jedi . It also appears in a deleted scene from Revenge of the Sith . Yoda went into exile on Dagobah after a lightsaber battle with Darth Sidious . </P> <P> The planet shown in Dagobah, in the Sluis sector, is a world of murky swamps, steaming bayous, and petrified forests, resembling Earth during the Carboniferous Period . </P> <P> In the Star Wars storyline, after the Great Jedi Purge and his subsequent failure to defeat Darth Sidious, Jedi Master Yoda went into voluntary exile on Dagobah . Here, Yoda lived near a cave infused with the dark side of the Force, which kept him from detection by Emperor Palpatine . </P> <P> In The Empire Strikes Back, Luke Skywalker is directed by the Force ghost of Obi - Wan Kenobi, to seek Yoda on Dagobah . After training with Yoda, Skywalker leaves Dagobah early to rescue his friends Han Solo, Princess Leia, and Chewbacca, whom he senses are in danger on the planet Bespin . Skywalker also briefly returns to Dagobah in Return of the Jedi, in which he has a final conversation with Yoda before Yoda's death . Luke then speaks to Obi - Wan Kenobi's ghost about the conflicting stories of Luke's parentage . </P>

The planet luke finds yoda on is most similar to earth in which period