Hard SF

Hard SF is a science-fiction subgenre traditionally defined as science-oriented stories that put an emphasis on science that is plausibleClute, John. “Glossary.” Science Fiction. The Ilustrated Encyclopedia, Dorling Kindersley, 1995, p. 306. or, at least, extrapolated from current scientific theories. Ideally, the stories should not willfully ignore or break down scientific principles, but the limits of those may be flexible depending on the author.Nicholls, Peter. "Hard SF." The Encyclopedia of Science Fiction. Eds. John Clute, David Langford, Peter Nicholls and Graham Sleight. Gollancz, 11 Aug. 2018. Web. 21 Feb. 2019.
==Defining work(s)==
* Mission of Gravity by Hal Clement (1954)
==Genre highlights==
*2001: A Space Odyssey (1968) by Arthur C. Clarke
* The Forever War (1974) by Joe Haldeman
* The Mars trilogy (1992-96) by Kim Stanley Robinson
==References==
Category:Genres