Crossword Genius

First Soviet earth satellite, 1957 (7)

Ross

I believe the answer is:

sputnik

(Other definitions for sputnik that I've seen before include "used to encircle the globe" , "First man-made satellite to orbit the earth" , "First artificial earth satellite" , "space traveller" , "Soviet satellite, launched 1957" .)

I've seen this clue in The Guardian.
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