Science fiction is a genre of fiction. It differs from fantasy in that, within the context of the story, its imaginary elements are largely possible within scientifically established or scientifically postulated laws of nature (though some elements in a story might still be pure imaginative speculation). Exploring the consequences of such differences is the traditional purpose of science fiction, making it a "literature of ideas". Science fiction is largely based on writing rationally about alternative possibilities. The settings for science fiction are often contrary to known reality.
Following the Age of Enlightenment and the development of modern science itself, Jonathan Swift's Gulliver's Travels was one of the first true science fiction works, together with Voltaire's Micromégas and Kepler's Somnium. This latter work is considered by Carl Sagan and Isaac Asimov to be the first science fiction story. It depicts a journey to the Moon and how the Earth's motion is seen from there. Another example is Ludvig Holberg's novel Nicolai Klimii iter subterraneum, 1741. (Translated to Danish by Hans Hagerup in 1742 as Niels Klims underjordiske Rejse.) (Eng. Niels Klim's Underground Travels.)
The study of science fiction, or science fiction studies, is the critical assessment, interpretation, and discussion of science fiction literature, film, new media, fandom, and fan fiction. Science fiction scholars take science fiction as an object of study in order to better understand it and its relationship to science, technology, politics, and culture-at-large.
The field has grown considerably since the 1970s with the establishment of more journals, organizations, and conferences with ties to the science fiction scholarship community, and science fiction degree-granting programs such as those offered by the University of Liverpool and Kansas University.
Authentic Science Fiction was a British science fiction magazine published in the 1950s that ran for 85 issues under three editors: Gordon Landsborough, H.J. Campbell, and E.C. Tubb. The magazine was published by Hamilton and Co., and began in 1951 as a series of novels appearing every two weeks; by the summer it had become a monthly magazine, with readers' letters and an editorial page, though fiction content was still restricted to a single novel. In 1952 short fiction began to appear alongside the novels, and within two more years it had completed the transformation into a science fiction magazine.
Authentic published little in the way of important or ground-breaking fiction, though it did print Charles L. Harness's "The Rose," which later became well-regarded. The poor rates of pay—£1 per 1,000 words—prevented the magazine from attracting the best writers. During much of its life it competed against three other moderately successful British science fiction magazines, as well as the American science fiction magazine market. Hamilton folded the magazine in October 1957, because they needed cash to finance an investment in the UK rights to an American best-selling novel.
