스푸트니크 발사, 우주 경쟁의 시작
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1957년, 소련이 인류 최초의 인공위성 스푸트니크를 발사하며 우주 경쟁이 본격적으로 시작되었습니다. 이는 과학 기술 발전과 국제 경쟁 구도를 크게 바꾼 사건이었습니다.
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