Science fiction Science fiction often shortened to Sci Fi or SF is a genre of speculative fiction, typically dealing with imaginative concepts such as advanced science and technology, space exploration, time travel, and extraterrestrial life.Science fiction often explores the potential consequences of scientific and other innovations, and has been called a literature of ideas. Best Sellers in Science Fiction Discover the best Science Fiction in Best Sellers Find the top most popular items in Books Best Sellers. Where the Stars Rise Asian Science Fiction and Fantasy Fonda Lee is the award winning author of Zeroboxer Flux , which was a Andre Norton finalist, Junior Library Guild Selection, and ALA Top Quick Pick for Reluctant Young Adult Readers. Science Fiction Poetry Association About SFPA The Science Fiction Fantasy Poetry Association was founded as the Science Fiction Poetry Association in to bring together poets and readers interested in speculative poetry. Hard science fiction Hard science fiction is a category of science fiction characterized by an emphasis on scientific accuracy The term was first used in print in by P Schuyler Miller in a review of John W Campbell s Islands of Space in the November issue of Astounding Science Fiction The complementary term soft science fiction, formed by analogy to hard science fiction, first appeared in the late s.