...And, as a corollary, if a propulsion explosion cannot haveeffect in empty space, as presumed in the story, the spaceship must enter atmosphere before it can stop by firing itsbow tubes...
Various 「Astounding Stories, July, 1931」
...“Scientists willcome through with something, somenew method of propulsion...
Various 「Astounding Stories of Super-Science, December 1930」
...The drift from God is a movement of events, a propulsion of vitalexperience, not a parade of words to be diverted by other words...
Dr. D.M. Brooks 「The Necessity of Atheism」
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