Weide, Robert (Summer 2012). “The Outer Limits”. DGA Quarterly: 64–71. OCLC68905662. A gallery of behind-the-scenes shots of movies featuring space travel or aliens. Page 68, photo caption: "Directed by Fritz Lang (third from right), the silent film Woman in the Moon (1929) is considered one of the first serious science fiction films and invented the countdown before the launch of a rocket. Many of the basics of space travel were presented to a mass audience for the first time."
