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English

Following the brief orbit of the first man-made satellite Sputnik I by the USSR in 1957, his production of nonfiction, particularly popular science books, greatly increased, with a consequent drop in his science fiction output.

Chinese

蘇聯在1957年發射第一顆短軌人造衛星史潑尼克一號後,他的非文學類著作,尤其是科普作品顯著增加,結果影響到科幻小說的產出,之後的四分之一世紀,他只寫了四本科幻小說。