Westerns influenced early science-fiction pulp magazines. Writers would submit stories in both genres, and science-fiction magazines sometimes mimicked Western cover art to showcase parallels. In the 1930s, C. L. Moore created one of the first space Western heroes, Northwest Smith. Buck Rogers and Flash Gordon were also early influences. After superhero comics declined in popularity in 1940s United States, Western comics and horror comics replaced them. When horror comics became untenable with the Comics Code Authority in the mid-1950s, science-fiction themes and space Westerns grew more popular. By the mid-1960s, classic Western films fell out of favor and Revisionist Westerns supplanted them. Science-fiction series such as "Lost in Space" and "Star Trek" presented a new frontier to be explored, and films like "Westworld" rejuvenated Westerns by updating them with science-fiction themes. Peter Hyams, director of "Outland", said that studio heads in the 1980s were unwilling to finance a Western, so he made a space Western instead. Space operas such as the "Star Wars" film series also took strong cues from Westerns; Boba Fett, Han Solo and the Mos Eisley cantina, in particular, were based on Western themes. These science fiction-films and television series offered the themes and morals that Westerns previously did.