Tasia, named after her highness Elsinore den Tasia of Grizzmalt, the sponsor of the colonization effort that ended up crash-landing on Naboo, is the third and farthest moon from Naboo.
Unlike Rori and Ohma'Dun, both of which are host to tropical environments, Tasia is a barren planetoid, full of ice and snow. While it does have an atmosphere, masks filled with the appropriate gas is still required for anyone who sets foot on the moon's surface. Because of its harsh environment, it is a favorite of the rich Naboo, who come to Tasia on their holidays. To facilitate this, three resorts have been set up--all self-sufficient, and all able to physically move in case one of Tasia's infamously vicious windstorms begins to head their way.
Before the Empire, the RSF used Tasia to train their pilots and warriors who would go out with the Republic anti-pirate task forces. During the time of the Imperial control of Naboo, Tasia was used to train some of the Empire's snowtroopers. In modern times, the RSF has their disciplinary facilities on Tasia, in addition to a survival course that is mandatory for senior officers, and sometimes offered for civilians who wish to be challenged.