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.
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.
The original title was Animal Farm: A Fairy Story, but A Fairy Story was dropped by the US publishers for its 1946 publication. Of all the translations during Orwell's lifetime, only Telugu kept the original title. Other variations in the title include: A Satire and A Contemporary Satire. Orwell suggested for the French translation the title Union des républiques socialistes animales, recalling the French name of the Soviet Union, Union des républiques socialistes soviétiques, and which abbreviates URSA, which means "bear", a symbol of Russia, in Latin.