An American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000 letters and postcards.

He is widely considered a master of hard science fiction and, along with Robert A. Heinlein and Arthur C. Clarke, one of the 'Big Three' science fiction writers during his lifetime. His most famous work is the Foundation Series; his other major series are the Galactic Empire series and the Robot series.