Science fiction

Lore & Background

Precedents for science fiction are claimed as far back as antiquity, with some scholars pointing to Lucian's 2nd-century novel A True Story, which includes travel to other worlds, extraterrestrial lifeforms, interplanetary warfare, and artificial life. Jules Verne and H. G. Wells became pivotal figures, with Wells writing The Time Machine, The Island of Doctor Moreau, The Invisible Man, and The War of the Worlds.

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 grew during the Golden Age of Science Fiction in the 20th century, expanding with space operas, dystopian literature, and pulp magazines. The definition remains disputed, with authors such as Isaac Asimov, Robert A. Heinlein, and Lester del Rey offering various formulations, and Damon Knight famously stating, 'Science fiction is what we point to when we say it.'

Did You Know?

• H. G. Wells predicted the advent of airplanes, military tanks, nuclear weapons, satellite television, space travel, and something like the World Wide Web.

The Endless Debate Over Definition

The question of what actually constitutes science fiction has generated more debate than perhaps any other literary genre. Isaac Asimov framed it as literature dealing with how human beings react 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 explain the genre, noting that no full satisfactory definition exists because its limits cannot be easily delineated. Damon Knight captured the circularity of the problem with the quip that science fiction is simply what we point to when we say it. David Seed suggested it might be more productive to discuss science fiction as the overlapping intersection of more concrete subgenres rather than as a single bounded category. Among enthusiasts, there is a persistent tendency to act as their own arbiters, deciding for themselves what belongs and what does not.

From Ancient Myths to the Modern Genre

The roots of science fiction stretch further back than most readers expect. In the second century CE, the satirist Lucian penned A True Story, a work brimming with themes that feel startlingly modern: journeys to other worlds, encounters with extraterrestrial beings, interplanetary conflict, and the creation of artificial life. Some scholars even argue it is the earliest science fiction novel. During the Scientific Revolution and the Enlightenment, a wave of writers produced what are now called early science-fantasy works. Kepler has since been dubbed the father of science fiction. Other notable contributions include Margaret Cavendish's The Blazing World and Voltaire's Micromégas. The genre truly crystallized in the nineteenth and early twentieth centuries, when popular writers turned to technological progress as a wellspring for speculation. G. Wells became pivotal architects of the field. The twentieth century brought the Golden Age, the rise of space operas, dystopian literature, and the pulp magazine era.

An Ever-Expanding Thematic Vocabulary

One of the most striking features of science fiction is its ever-expanding thematic vocabulary. The elements that define the genre have grown steadily over time. Early works centered on space exploration, encounters with extraterrestrial life, time travel, and robotics. As the genre matured, its scope widened to encompass parallel universes, dystopian societies, and the manipulation of biological systems. In more recent decades, writers have turned their attention to information technology, transhumanism, posthumanism, and the pressing challenges of environmental change. At its core, however, science fiction consistently interrogates how human beings respond to the consequences of imagined or projected scientific advances, making the human reaction as important as the technology itself. The genre also fractures into distinct subgenres, each with its own priorities. Hard science fiction places a premium on scientific accuracy, while soft science fiction leans toward the social sciences. Space opera prioritizes pure adventure in a universe where interstellar travel is commonplace. Cyberpunk probes the fraught interface between technology and society, and climate fiction brings urgent environmental issues to the forefront of speculative storytelling.

Terminology, Tension, and Cultural Reach

Science fiction's influence has long outgrown the page, shaping film, television, and broader culture in ways that are difficult to overstate. The genre serves multiple purposes at once: it can criticize present-day society, explore alternative futures, provide entertainment, and inspire a sense of wonder. Yet even the language surrounding the genre carries tension. As the genre entered popular culture, many writers and fans began associating sci-fi with low-quality pulp fiction and low-budget B movies. By the 1970s, critics such as Damon Knight and Terry Carr deliberately used the term to separate hack-work from serious science fiction. Robert Heinlein, feeling that science fiction was insufficient for certain works, proposed the broader label speculative fiction for pieces he considered more serious and thoughtful.