Where does “astronot” come from?

astronot (English) comes from English Not, from Middle English not, from Middle English nought, from Old English nōwiht, from Old English ne, from Old English ealles, from Old English -es, from Proto-Germanic -as — Creates action nouns or result nouns from verbs;...

Ancestry of “astronot”, step by step

astronot traces back through two separate lines of ancestry.

via English Not

StepLanguageWordMeaning
1EnglishNot
2Middle Englishnotnot; nothing, nought; nobody, no person
3Middle Englishnoughtnothing, none; not; iniquitous, wicked
4Old Englishnōwiht
5Old Englishnenot; or, and not; "ne... ne..." is used to mean "...
6Old Englisheallescompletely, wholly, entirely; totally,...
7Old English-espossessive marker, indicating that an object...
8Proto-Germanic-asused in formation of adverbs
9Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
10Proto-Indo-European-ess
11Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English astronaut

StepLanguageWordMeaning
1EnglishastronautA member of the crew of a spaceship or other...
2Englishastro-celestial bodies: fixed stars, wandering stars (planets), etc.; space; astronomy
3Ancient GreekἄστρονA celestial body
4Ancient Greekἀστήρa celestial body; illustrious person; starfish
5Proto-Hellenicastḗrstar
6Proto-Indo-Europeanh₂stḗrstar
7Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth
Every word from Proto-Indo-European -osEvery word from Old English -esEvery word from Old English ealles