 Lucas continued to hone his script, aided by screenwriters Willard Huyck and Gloria Katz; names of planets and characters were revised and the narrative was improved, and by the fourth draft, scenes on the Imperial capital planet had been moved to a space station called the Death Star and the peaceful world destroyed by the Empire had taken the name Alderaan.The on-screen depictions of Alderaan in the "Star Wars" films are scant; the distant planet is seen momentarily in "Star Wars" (1977) prior to its destruction, and in "Revenge of the Sith" (2005) a short scene shows a city amid a snow-covered, mountainous landscape.Alderaan was originally featured in the first film, "Star Wars", released in 1977.