 In film, the genre probably began with the 1918 Danish film, "Himmelskibet".Unlike earlier stories of space adventure, which either related the invasion of Earth by extraterrestrials, or concentrated on the invention of a space vehicle by a genius inventor, pure space opera simply took space travel for granted (usually by setting the story in the far future), skipped the preliminaries, and launched straight into tales of derring-do among the stars.Early stories of this type include J. Schlossel's "Invaders from Outside" ("Weird Tales", January 1925), "The Second Swarm" ("Amazing Stories Quarterly", spring 1928) and "The Star Stealers" ("Weird Tales", February 1929), Ray Cummings' "Tarrano the Conqueror" (1925), and Edmond Hamilton's "Across Space" (1926) and "Crashing Suns" ("Weird Tales", August–September 1928).