Countdown (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Countdown" in English language version.

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archive.org

Ley, Willy (October 1968). "The Orbit of Explorer-1". For Your Information. Galaxy Science Fiction. pp. 93–102.

Weide, Robert (Summer 2012). "The Outer Limits". DGA Quarterly. Los Angeles, California: Directors Guild of America, Inc.: 64–71. 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."

"NASA Mission 'E-Minus' One Month to Comet Flyby". NASA Mission News. 2010-10-04. Archived from the original on 2016-04-13. Retrieved 2013-09-13.
"Launching by the Book". NASA. April 30, 2007. Archived from the original on May 2, 2007.

"NASA, "The Space Shuttle launch team"". Science.ksc.nasa.gov. 1967-11-09. Archived from the original on 2015-06-19. Retrieved 2014-06-28.

"Spektrum der Wissenschaft - DenkMal-Frage: "Was verdankt die Raumfahrt dem Stummfilm "Die Frau im Mond" (1929) von Fritz Lang?" [Spektrum der Wissenschaft - DenkMal question: "What does space travel owe to the silent film "Woman in the Moon" (1929) by Fritz Lang?] (in German). Wissenschaft-online.de.