gaseous cloud planet called Ophuchi. According to Lucasfilm's Star Wars Story Group executive Leland Chee, "Yavin 4" ("Yavin Four" in dialogue) is the correct spelling, not "Yavin IV". Film The planet Yavin made its first appearance in the original 1977 Star Wars film. The planet is shown in space during the approach of the Millennium Falcon spaceship as a large red gas giant planet; orbiting this planet, Yavin 4, the fourth moon, appears on screen as a green/blue-colored Earth-like world. Scenes showing the Rebel Base are all set on this Moon, which is covered in dense, mist-covered jungles. The Rebel Alliance has established its base hidden in a complex of ancient temple ruins, known as the Massassi ruins. Tall observation towers stand above the treetops to monitor entries and exits from the base. Once discovered by the Galactic Empire, the Yavin Base is threatened by the Death Star, the Empire's giant space station which has the capability of destroying entire planets. The Rebellion launches an attack on the Death Star with X-wing and Y-wing starfighters; with seconds remaining before the Yavin moon is to be destroyed, Luke Skywalker launches proton torpedoes and successfully destroys the Death Star. The film concludes with a triumphant award ceremony on Yavin in which the heroes are decorated for their bravery. This battle has become known as the Battle of Yavin, and its date is used as a place-marker for events in the expanded Star Wars universe. Events before the Battle of Yavin are marked by BBY ("Before the Battle of Yavin"), and events that occur after are marked by ABY ("After the Battle of Yavin"). After the events of Episode IV: A New Hope, the Rebellion abandons the moon to seek sanctuary elsewhere. However, Yavin base features once again in the 2016 standalone film, Rogue One. Set a short time before Episode IV, Rogue One follows the story of a young outlaw called Jyn Erso who becomes involved with the Rebels. Erso is brought to the base on Yavin 4 and several scenes in the base depict characters who originally appeared in earlier Star Wars films, including Senator Mon Mothma, Bail Organa and General Dodonna. Erso argues with the Rebel leadership on Yavin 4 about a planned attack on an Imperial base to steal the schematics of the Death Star. Defying their decision against the operation, Erso joins a task force to steal the