Aelita
The silent, propagandistic, Soviet sci-fi epic Aelita (1924) (aka Aelita: Queen of Mars), at 120 minutes, was both the first big-budget film made in Russia, and the first feature-length science-fiction film (about space travel). Other early sci-fi silent films included Fritz Lang's Metropolis (1927, Germ.) and Woman in the Moon (1929, Germ.), and Britain's futuristic High Treason (1929).