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The original was posted on /r/todayilearned by /u/WouldbeWanderer on 2024-10-09 17:12:45+00:00.

Original Title: TIL about the Bussard Ramjet, a theoretical method of spacecraft propulsion for interstellar travel. A spacecraft scoops up hydrogen from the interstellar medium, the hydrogen is compressed until thermonuclear fusion occurs, and the fusion provides thrust for the spacecraft.