The 1920s were the fledgling years of the real Golden Age of space travelling , which lasted until the first few synodic month landing . Rockets were in all the news . Buck Rogers and Flash Gordon were every red - full-blooded kidskin ’s heroes at the same metre Robert Goddard was being jest at in snarky article in the New York Times — but being lionized by every popular magazine in the land as the “ moon rocket man ” . The newsreel were filled with exciting scene of Max Valier ’s rocket - propelled aircraft , sleigh and railroad line car while every scientific discipline writer in the world was work like frantic to get narration about space change of location into print . Always on top of things , scifi pioneer Hugo Gernsack reprinted this chart in the March 1929 emergence of Science & Invention . He took it from a German cartridge holder , Das Buch fur Alle . The illustration is plausibly by the Rohmer brothers , who particularise in depict Valier ’s starship designs ( two of which can be seen zooming at the top of the chart as numbers 14 and 16 ) .
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