Works of American science-fiction writer Robert Anson Heinlein include Stranger in a Strange Land (1961) and The Moon Is a Harsh Mistress (1966). People often call this novelist "the dean of science fiction writers", one of the most popular, influential, and controversial authors of "hard science fiction." He set a high standard for science and engineering plausibility and helped to raise the standards of literary quality of the genre. He was the first science-fiction writer to break into mainstream, general magazines such as The Saturday Evening Post, in the late 1940s. He was also among the first authors of bestselling, novel-length science fiction in the modern, mass-market era. Also wrote under Pen names: Anson McDonald, Lyle Monroe, Caleb Saunders, John Riverside and Simon York.

John Wood Campbell, Jr. was an influential figure in American science fiction. As editor of Astounding Science Fiction (later called Analog Science Fiction and Fact), from late 1937 until his death, he is generally credited with shaping the so-called Golden Age of Science Fiction. Isaac Asimov called Campbell "the most powerful force in science fiction ever, and for the first ten years of his editorship he dominated the field completely." As a writer, Campbell published super-science space opera under his own name and moody, less pulpish stories as Don A. Stuart. He stopped writing fiction after he became editor of Astounding. Known Pseudonyms/Alternate Names: Don A. Stuart Karl van Campen John Campbell J. W. C., Jr. John W. Campbell John Wood Campbell

Theodore Sturgeon (1918–1985) is considered one of the godfathers of contemporary science fiction and dark fantasy. The author of numerous acclaimed short stories and novels, among them the classics More Than Human, Venus Plus X, and To Marry Medusa, Sturgeon also wrote for television and holds among his credits two episodes of the original 1960s Star Trek series, for which he created the Vulcan mating ritual and the expression “Live long and prosper.” He is also credited as the inspiration for Kurt Vonnegut’s recurring fictional character Kilgore Trout. Sturgeon is the recipient of the Hugo Award, the Nebula Award, and the International Fantasy Award. In 2000, he was posthumously honored with a World Fantasy Award for Life Achievement.

Lester del Rey was an American science fiction author and editor. Del Rey is especially famous for his juvenile novels such as those which are part of the Winston Science Fiction series, and for Del Rey Books, the fantasy and science fiction branch of Ballantine Books edited by Lester del Rey and his fourth wife Judy-Lynn del Rey. Also published as: Philip St. John Eric van Lihn Erik van Lhin Kenneth Wright Edson McCann (with Frederik Pohl)

Isaac Asimov was a Russian-born, American author, a professor of biochemistry, and a highly successful writer, best known for his works of science fiction and for his popular science books. Professor Asimov is generally considered 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 has works published in nine of the ten major categories of the Dewey Decimal System (lacking only an entry in the 100s category of Philosophy). Asimov is widely considered a master of the science-fiction genre and, along with Robert A. Heinlein and Arthur C. Clarke, 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 penned numerous 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, a title many still honor. He also wrote mysteries and fantasy, as well as a great amount of nonfiction. Asimov wrote the Lucky Starr series of juvenile science-fiction novels using the pen name Paul French. Most of Asimov's popularized science books explain scientific concepts in a historical way, going as far back as possible to a time when the science in question was at its simplest stage. He often provides nationalities, birth dates, and death dates for the scientists he mentions, as well as etymologies and pronunciation guides for technical terms. Examples include his Guide to Science, the three volume set Understanding Physics, and Asimov's Chronology of Science and Discovery. Asimov was a long-time member and Vice President of Mensa International, albeit reluctantly; he described some members of that organization as "brain-proud and aggressive about their IQs" He took more joy in being president of the American Humanist Association. The asteroid 5020 Asimov, the magazine Asimov's Science Fiction, a Brooklyn, NY elementary school, and two different Isaac Asimov Awards are named in his honor.

Full name: Stanley Grauman Weinbaum "In his short career, Stanley G. Weinbaum revolutionized science fiction. We are still exploring the themes he gave us." - Poul Anderson "Stanley G. Weinbaum's name deserves to rank with those of Wells and Heinlein - and no more than a handful of others - as among the great shapers of modern science fiction." - Frederik Pohl