Of or pertaining to astronauts, space travel, space exploration, and the science and technology that enables human spaceflight.
From 'astronautic' plus the adjective-forming suffix '-al.' The term gained widespread use after 1961 with the Soviet Vostok program and American Mercury program.
When Yuri Gagarin became the first human in space, this word suddenly transformed from a rare technical term into everyday vocabulary—a perfect example of history changing language instantly!
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