Usage History of 'astronaut'

The following chart shows how frequently 'astronaut' appeared in printed materials over time. For example, the word 'astronaut' occurred 6 times in books in 1838 and 28,201 times in 2008. From 1838 to 2008, the word 'astronaut' was used a total of 707,002 times in books scanned by Google. See Reference: Google Ngram project.

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