1
Stage 1 of 3
kosmos
Greek · ancient
"the universe"
the universe, order, combined with nautes (sailor)
2
Stage 2 of 3
kosmonavt
Russian · 1959
"a Soviet or Russian space traveler"
coined in the Soviet space program as the Russian counterpart to astronaut
3
Stage 3 of 3
cosmonaut
English · 1959
"a Russian or Soviet space traveler"
adopted directly for Soviet and Russian space travelers
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