Frederik George Pohl, Jr. (born November 26, 1919) is an American science fiction writer, editor and fan, with a career spanning over seventy years — from his first published work, "Elegy to a Dead Planet: Luna" (1937), to his most recent novel, All the Lives He Led (2011).

From about 1959 until 1969, Pohl edited Galaxy and its sister magazine If; the latter won three successive annual Hugo Awards as the year's best professional magazine. His 1977 novel Gateway won four "year's best novel" awards: the Hugo voted by convention participants, the Locus voted by magazine subscribers, the Nebula voted by American science fiction writers, and the juried academic John W. Campbell Memorial Award. He won the Campbell Memorial Award again for the 1984 collection of novellas Years of the City, the only repeat winner in forty years. For his 1979 novel Jem, Pohl won a U.S. National Book Award in the one-year category Science Fiction. It was a finalist for three other year's best novel awards. In all he won four Hugo and three Nebula Awards.

Isaac Asimov (/ˈaɪzək ˈæzɨməv/ EYE-zək AZ-i-məv; born Isaak Yudovich Ozimov, Russian: Исаак Юдович Озимов; Yiddish: אייזיק יודאָוויטש אסימאוו; c. January 2, 1920 – April 6, 1992) was 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. His works have been published in all ten major categories of the Dewey Decimal System (although his only work in the 100s—which covers philosophy and psychology—was a foreword for The Humanist Way).

Asimov is widely considered a master of hard science fiction and, along with Robert A. Heinlein and Arthur C. Clarke, he was considered one of the "Big Three" science fiction writers during his lifetime. Asimov's most famous work is the Foundation Series; his other major series are the Galactic Empire series and the Robot series, both of which he later tied into the same fictional universe as the Foundation Series to create a unified "future history" for his stories much like those pioneered by Robert A. Heinlein and previously produced by Cordwainer Smith and Poul Anderson. He wrote many short stories, among them "Nightfall", which in 1964 was voted by the Science Fiction Writers of America the best short science fiction story of all time. Asimov wrote the Lucky Starr series of juvenile science-fiction novels using the pen name Paul French.