Asimov was born in Petrovichi, Smolensk Oblast, Russian SFSR to a Jewish family, on an unknown date between October 4, 1919 and January 2, 1920. Asimov celebrated his birthday on January 2. He was taken to the United States when he was three, and learned English and Yiddish as his native languages. He wrote many books. People know about Isaac Asimov because of his science fiction books and his science books for non-scientists.