Science fiction
Genre of speculative fiction about advanced technology and its consequences.
Science fiction, sometimes called sci-fi or SF, is a branch of speculative fiction that envisions future or advanced shifts in technology, science, or biology. Over time, its common themes have multiplied: early ones include space travel, alien life, time machines, and robots; later additions involve parallel worlds, oppressive future societies, and genetic engineering; more recent concerns cover computers, transhumanism, posthumanism, and ecological crises. The genre often examines how people react to the imagined outcomes of these scientific developments.
There is no single agreed-upon definition of science fiction among its writers, critics, scholars, or fans. It contains many subgenres: hard science fiction stresses scientific accuracy; soft science fiction emphasizes social sciences; space opera focuses on adventurous travel across a universe where spaceflight is routine; cyberpunk looks at the intersection of technology and society; and climate fiction tackles environmental problems.
Precursors to science fiction can be found in ancient times. Works from the Scientific Revolution and the Enlightenment are sometimes seen as early science-fantasy. The modern form took shape mainly in the 1800s and early 1900s, as popular authors turned to technological progress for ideas. Mary Shelley’s *Frankenstein* (1818) is often called the first true science fiction novel. Jules Verne and H. G. Wells were key figures in its development. In the 20th century, the genre grew during its Golden Age, expanding through space operas, dystopian tales, and pulp magazines.
Science fiction has influenced not just literature but also film, television, and broader culture. It can critique present-day society, explore alternatives, provide entertainment, and inspire wonder.
**Definitions**
The *Encyclopedia of Science Fiction* (1993, edited by John Clute and Peter Nicholls) includes a lengthy discussion on the difficulty of defining the genre. Isaac Asimov described it as literature dealing with human reactions to changes in science and technology. Robert A. Heinlein called it realistic speculation about possible future events, grounded in solid knowledge of the real world and the scientific method. Lester del Rey noted that even devoted fans struggle to explain what science fiction is, and that no fully satisfactory definition exists because the genre has no clear boundaries. Another definition, from DK’s *The Literature Book*, says it involves scenarios that are technologically impossible at the time of writing, extrapolating from current science, or that deal with a speculative science-based conceit, like a society that has developed in a completely different way. Science fiction enthusiasts often act as their own judges of what counts. David Seed suggests it may be more useful to see science fiction as the overlap of more concrete subgenres. Damon Knight summed up the challenge: “Science fiction is what we point to when we say it.”
**Alternative terms**
Forrest J Ackerman is credited with first using the term *sci-fi* around 1954, echoing the then-fashionable term *hi-fi*. The first known print use was by movie critic Jesse Zunser in January 1954, describing *Donovan’s Brain*. As science fiction entered popular culture, writers and fans began to associate *sci-fi* with low-quality pulp stories and cheap B-movies. By the 1970s, critics like Damon Knight and Terry Carr used *sci fi* to separate hack work from serious science fiction. Around 1993, Peter Nicholls wrote that *SF* (or *sf*) is the preferred abbreviation among science fiction writers and readers. Robert Heinlein felt *science fiction* was inadequate for some works and suggested *speculative fiction* for more serious or thoughtful pieces.
**Literature**
**18th century and earlier**
Some scholars trace science fiction’s origins to ancient times, when myth and fact were not clearly separated. Lucian’s 2nd-century novel *A True Story* includes many modern sci-fi themes: travel to other worlds, alien life, interplanetary war, and artificial life; some consider it the first science fiction novel. Stories from *The Arabian Nights*, the 10th-century *The Tale of the Bamboo Cutter*, and Ibn al-Nafis’s 13th-century *Theologus Autodidactus* are also argued to contain science fiction elements. Several works from the Scientific Revolution and Enlightenment are seen as true science-fantasy, including Francis Bacon’s *New Atlantis* (1627), Johannes Kepler’s *Somnium* (1634), Athanasius Kircher’s *Itinerarium extaticum* (1656), Cyrano de Bergerac’s *Comical History of the States and Empires of the Moon* (1657) and *The States and Empires of the Sun* (1662), and Margaret Cavendish’s *The Blazing World* (1666).
- field
- Speculative fiction
- known_for
- Imagining advanced technology, space exploration, extraterrestrial life, time travel, robotics, parallel universes, dystopian societies, biological manipulations, information technology, transhumanism
- earliest_claimed_precedent
- 2nd century CE (Lucian's A True Story)
- preferred_abbreviation
- SF (or sf)
Lore & Background
Precedents for science fiction are claimed as far back as antiquity, with some scholars citing Lucian's 2nd-century novel *A True Story* as containing themes of travel to other worlds, extraterrestrial lifeforms, interplanetary warfare, and artificial life. The modern genre, however, arose primarily in the 19th and early 20th centuries, as popular writers began drawing inspiration from technological progress. Mary Shelley's *Frankenstein* (1818) is often credited as the first true science fiction novel. Jules Verne and H. G. Wells are pivotal figures in the genre's development. The genre expanded significantly during the 20th-century Golden Age of Science Fiction, alongside the rise of space operas, dystopian literature, and pulp magazines. Science fiction is a form of speculative fiction that imagines advanced changes in technology, scientific knowledge, or biological systems. Common elements include space exploration, extraterrestrial life, time travel, robotics, parallel universes, dystopian societies, biological manipulations, information technology, transhumanism, posthumanism, and environmental challenges. The genre often explores human responses to the consequences of these imagined scientific advances. It contains many subgenres, such as hard science fiction (emphasizing scientific accuracy), soft science fiction (focusing on social sciences), space opera (adventure in a universe with common space travel), cyberpunk (the interface between technology and society), and climate fiction (addressing environmental issues). Science fiction has influenced literature, film, television, and culture at large, serving to criticize present-day society, explore alternatives, provide entertainment, and inspire a sense of wonder.
Reader's Guide
Science fiction has come to influence not only literature, but also film, television, and culture at large. It can criticize present-day society and explore alternatives, as well as provide entertainment and inspire a sense of wonder. The genre contains many subgenres, including hard science fiction (emphasizing scientific accuracy), soft science fiction (focusing on social sciences), space opera (adventure in a universe with common space travel), cyberpunk (the interface between technology and society), and climate fiction (addressing environmental issues). In the 20th century, the genre grew during the Golden Age of Science Fiction and expanded with space operas, dystopian literature, and pulp magazines. The preferred abbreviation within the community of writers and readers is SF. Robert Heinlein suggested the term 'speculative fiction' for more serious or thoughtful works.
Did You Know?
- Isaac Asimov defined science fiction as 'that branch of literature which deals with the reaction of human beings to changes in science and technology.'
- Robert A. Heinlein defined science fiction as 'realistic speculation about possible future events, based solidly on adequate knowledge of the real world, past and present, and on a thorough understanding of the nature an
The Endless Debate Over Definition
The question of what exactly qualifies as science fiction has never settled into one universally accepted answer. Authors, critics, scholars, and readers have all weighed in with competing perspectives, and the Encyclopedia of Science Fiction edited by John Clute and Peter Nicholls devoted an extensive discussion to the problem. Isaac Asimov framed the genre around humanity's reaction to shifts in science and technology, while Robert A. Heinlein emphasized realistic speculation grounded in solid knowledge of the real world and a thorough grasp of the scientific method. Lester del Rey conceded that even devoted fans struggle to pin down the genre's boundaries, arguing that no fully satisfactory definition exists because the limits are not easily delineated. The publisher DK offered a more concrete framing: scenarios that are technologically impossible at the time of writing, extrapolating from present-day science, or built around speculative science-based conceits. David Seed suggested it might be more productive to view science fiction as the intersection of more concrete subgenres. Perhaps no one captured the circularity better than Damon Knight, who quipped that science fiction is simply what we point to when we say it.
From Ancient Myths to the Modern Genre
Scholars trace the seeds of science fiction back to antiquity, when the boundary between myth and fact was far more blurred. Lucian's A True Story, written in the 2nd century CE, already contained themes we now associate with the genre: travel to other worlds, extraterrestrial lifeforms, interplanetary warfare, and artificial life. Stories from The Arabian Nights, the 10th-century Tale of the Bamboo Cutter, and Ibn al-Nafis's 13th-century Theologus Autodidactus are also cited as early precursors. Asimov and Carl Sagan singled out Kepler's Somnium as the first science fiction story, and Kepler has been called the father of the genre. G. Wells. The 20th-century Golden Age further expanded the genre through space operas, dystopian literature, and pulp magazines.
A Genre That Keeps Growing
One of science fiction's most remarkable qualities is its relentless expansion. The elements that define the genre have multiplied over the decades: early works centered on space exploration, extraterrestrial life, time travel, and robotics; later additions brought parallel universes, dystopian societies, and biological manipulations into the fold; and the most recent wave has embraced information technology, transhumanism, posthumanism, and environmental challenges. At its core, the genre consistently explores how human beings respond to the consequences of projected or imagined scientific advances. This breadth has given rise to a rich taxonomy of subgenres. Hard science fiction prioritizes scientific accuracy, while soft science fiction leans toward social sciences. Space opera delivers pure adventure in universes where interstellar travel is commonplace. Cyberpunk probes the friction between technology and society, and climate fiction addresses pressing environmental issues. Together, these strands ensure that the genre remains a living, evolving conversation rather than a fixed category.
Naming, Culture, and Influence
The terminology surrounding science fiction carries its own history and politics. American editor Forrest J. As the genre entered mainstream culture, many writers and fans began associating "sci-fi" with low-quality pulp and low-budget B movies. By the 1970s, critics like Damon Knight and Terry Carr deliberately used "sci fi" to separate hack-work from serious science fiction. Peter Nicholls noted that "SF" or "sf" remained the preferred abbreviation within the community of writers and readers. Robert Heinlein, feeling that "science fiction" was insufficient for certain thoughtful works, proposed the broader term "speculative fiction." Beyond nomenclature, the genre's cultural reach is vast: it has shaped film, television, and broader public discourse, serving simultaneously as a mirror that criticizes present-day society, a laboratory for exploring alternatives, a source of entertainment, and a wellspring of wonder.
Frequently Asked Questions
What is science fiction as a narrative form?
Science fiction is a branch of speculative fiction that projects futuristic or imagined advances in technology, science, or biology and examines how people react to those changes. It is distinguished from other speculative genres by its grounding in plausible scientific or technological premises.
What themes and subjects does science fiction typically explore?
The genre commonly tackles space exploration, alien contact, time travel, robotics, parallel universes, dystopian societies, genetic engineering, and transhumanism. These subjects serve as lenses for examining the human condition under radically altered circumstances.
What is the earliest claimed precedent for science fiction?
The oldest work often cited as a precursor is Lucian's 'A True Story,' written in the 2nd century CE. It features a narrator traveling to the Moon and other celestial bodies, making it one of the first known narratives to blend imaginative science with storytelling.
What is the preferred abbreviation for science fiction?
The community-preferred abbreviation is 'SF' (sometimes lowercased as 'sf'), though 'sci-fi' is widely used in casual conversation. Many authors and critics favor 'SF' because they feel the hyphenated form carries a slightly dismissive tone.
Why is science fiction important in the broader landscape of narrative forms?
Science fiction offers a structured way to interrogate the social, ethical, and political implications of real or potential scientific progress before those consequences actually arrive. Its contested definition—debated among writers, scholars, and readers—reflects the genre's ongoing role in shaping how societies imagine their own future.
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