The following is a list of articles about recurring

themes Theme or themes may refer to: * Theme (arts), the unifying subject or idea of the type of visual work * Theme (Byzantine district), an administrative district in the Byzantine Empire governed by a Strategos * Theme (computing), a custom graphical ...

science fiction Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel uni ...

Overarching themes

* First contact with aliens *

Artificial intelligence Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machines, as opposed to intelligence displayed by animals and humans. Example tasks in which this is done include speech ...

** Machine rule/

Cybernetic revolt An AI takeover is a hypothetical scenario in which an artificial intelligence (AI) becomes the dominant form of intelligence on Earth, as computer programs or robots effectively take the control of the planet away from the human species. Possib ...

/ AI takeover *

Extraterrestrials in fiction An extraterrestrial or alien is any extraterrestrial lifeform; a lifeform that did not originate on Earth. The word ''extraterrestrial'' means "outside Earth". The first published use of ''extraterrestrial'' as a noun occurred in 1956, during the ...

*End of humanity:

Apocalyptic and post-apocalyptic fiction Apocalyptic and post-apocalyptic fiction is a subgenre of speculative fiction in which the Earth's (or another planet's) civilization is collapsing or has collapsed. The apocalypse event may be climatic, such as runaway climate change; as ...

*The

future The future is the time after the past and present. Its arrival is considered inevitable due to the existence of time and the laws of physics. Due to the apparent nature of reality and the unavoidability of the future, everything that current ...

: Apocalypses or worldwide disasters and new societies that develop after the event *

History History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well ...

Alternate history Alternate history (also alternative history, althist, AH) is a genre of speculative fiction of stories in which one or more historical events occur and are resolved differently than in real life. As conjecture based upon historical fact, alte ...

**Scientific

prediction A prediction (Latin ''præ-'', "before," and ''dicere'', "to say"), or forecast, is a statement about a future event or data. They are often, but not always, based upon experience or knowledge. There is no universal agreement about the exact ...

of the future (e.g. psychohistory) *Human fears:

List of science fiction horror films This is a list of science fiction horror films. 0-9 *''4D Man'' (1959) *'' 9'' (2009) *'' 9'' (2019) A B C D E F G H I J K L M N O *''The Omega Man'' (1971) *'' Outland'' (1981) *''Outpost'': **'' Outpost'' (2008) ...

Language Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of ...

** Alien languages (e.g.

Klingon The Klingons ( ; Klingon: ''tlhIngan'' ) are a fictional species in the science fiction franchise ''Star Trek''. Developed by screenwriter Gene L. Coon in 1967 for the original ''Star Trek'' (''TOS'') series, Klingons were swarthy humanoids c ...

, Huttese) **The

Sapir–Whorf Hypothesis The hypothesis of linguistic relativity, also known as the Sapir–Whorf hypothesis , the Whorf hypothesis, or Whorfianism, is a principle suggesting that the structure of a language affects its speakers' worldview or cognition, and thus people' ...

(e.g. '' Babel 17'', '' The Languages of Pao'') **

Universal translator A universal translator is a device common to many science fiction works, especially on television. First described in Murray Leinster's 1945 novella " First Contact", the translator's purpose is to offer an instant translation of any language. ...

s (e.g. Babel fish) * Military/conflicts ** Interstellar war **

Weapons in science fiction Strange and exotic weapons are a recurring feature in science fiction. In some cases, weapons first introduced in science fiction have been made a reality; other science-fiction weapons remain purely fictional, and are often beyond the realms of ...

* Parallel worlds or

multiverse The multiverse is a hypothetical group of multiple universes. Together, these universes comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. The dif ...

* * Philosophies and philosophical ideas * Political ideas * Religious ideas * Sex and sexuality ** LGBT themes **

Gender Gender is the range of characteristics pertaining to femininity and masculinity and differentiating between them. Depending on the context, this may include sex-based social structures (i.e. gender roles) and gender identity. Most culture ...

** Reproduction and pregnancy *

Simulated reality The simulation theory is the hypothesis that reality could be simulated—for example by quantum computer simulation—to a degree indistinguishable from "true" reality. It could contain conscious minds that may or may not know that they live i ...

and

consciousness Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scien ...

* Social science fiction *

Technological singularity The technological singularity—or simply the singularity—is a hypothetical future point in time at which technological growth becomes uncontrollable and irreversible, resulting in unforeseeable changes to human civilization. According to the m ...

* Themes of fantasy fiction

Beings and entities

s ** Androids and

Gynoid A gynoid, or fembot, is a feminine humanoid robot. Gynoids appear widely in science fiction film and art. As more realistic humanoid robot design becomes technologically possible, they are also emerging in real-life robot design. Name A gynoid ...

** Artificial life **

Biological robot Biorobotics is an interdisciplinary science that combines the fields of biomedical engineering, cybernetics, and robotics to develop new technologies that integrate biology with mechanical systems to develop more efficient communication, alter ge ...

Cyborg A cyborg ()—a portmanteau of ''cybernetic'' and ''organism''—is a being with both organic and biomechatronic body parts. The term was coined in 1960 by Manfred Clynes and Nathan S. Kline.

s ** Robots and humanoid robots **

Replicant A replicant is a fictional bioengineered humanoid featured in the 1982 film '' Blade Runner'' and the 2017 sequel ''Blade Runner 2049'' which is physically indistinguishable from an adult human and often possesses superhuman strength and intel ...

s ** Simulated consciousness *Characters **The

Absent-minded professor The absent-minded professor is a stock character of popular fiction, usually portrayed as a talented academic whose academic brilliance is accompanied by below-par functioning in other areas, leading to forgetfulness and mistakes. One explanati ...

**The

Golem A golem ( ; he, , gōlem) is an animated, anthropomorphic being in Jewish folklore, which is entirely created from inanimate matter (usually clay or mud). The most famous golem narrative involves Judah Loew ben Bezalel, the late 16th-century ...

**The

Mad Scientist The mad scientist (also mad doctor or mad professor) is a stock character of a scientist who is perceived as " mad, bad and dangerous to know" or "insane" owing to a combination of unusual or unsettling personality traits and the unabashedly am ...

Redshirt Redshirt, Red Shirt, or Redshirts may refer to: Entertainment * ''Red Shirts'' (film), a 1952 film about Anita Garibaldi by Franco Rossi * Redshirt (stock character), originally derived from ''Star Trek'', a stock character who dies soon after b ...

** Space Pirate ** Super Soldier * Clones *

Dinosaurs Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is the ...

Extraterrestrial life Extraterrestrial life, colloquially referred to as alien life, is life that may occur outside Earth and which did not originate on Earth. No extraterrestrial life has yet been conclusively detected, although efforts are underway. Such life might ...

Hypothetical types of biochemistry Hypothetical types of biochemistry are forms of biochemistry agreed to be scientifically viable but not proven to exist at this time. The kinds of living organisms currently known on Earth all use carbon compounds for basic structural and metabo ...

** Alien invasion **

Astrobiology Astrobiology, and the related field of exobiology, is an interdisciplinary scientific field that studies the origins, early evolution, distribution, and future of life in the universe. Astrobiology is the multidisciplinary field that invest ...

** God-like aliens ***Principles of non-interference (e.g.

Prime Directive In the fictional universe of '' Star Trek'', the Prime Directive (also known as "Starfleet General Order 1", "General Order 1", and the "non-interference directive") is a guiding principle of Starfleet that prohibits its members from interferi ...

) ***

Message from space is a 1978 Japanese space opera film directed by Kinji Fukasaku. It stars Sonny Chiba, Etsuko Shihomi, and Vic Morrow. Produced by Toei Company, Toei with a cost between the equivalent of US$5 and 6 million, it was the most expensive film made ...

*Living planets (both sentient and non-sentient) * Hive minds * Infomorphs—memories, characters, and consciences of persons being uploaded to a computer or storage media * Mutants *

Shapeshifters In mythology, folklore and speculative fiction, shape-shifting is the ability to physically transform oneself through an inherently superhuman ability, divine intervention, demonic manipulation, sorcery, spells or having inherited the ...

Superhuman The term superhuman refers to humans or human-like beings with enhanced qualities and abilities that exceed those naturally found in humans. These qualities may be acquired through natural ability, self-actualization or technological aids. Th ...

s * Superorganisms * Symbionts *

UFOs An unidentified flying object (UFO), more recently renamed by US officials as a UAP (unidentified aerial phenomenon), is any perceived aerial phenomenon that cannot be immediately identified or explained. On investigation, most UFOs are ide ...

* Uplifting—using technology to "raise" non-human animals to human evolutionary levels **

Ancient astronauts Ancient astronauts (or ancient aliens) refers to a pseudoscientific hypothesis which holds that intelligent extraterrestrial beings visited Earth and made contact with humans in antiquity and prehistoric times. Proponents suggest that thi ...

Progressor The Noon Universe ( Russian term: "Мир Полудня" or "Мир Полдня" – "World of Noon"; also known as the “Wanderers’ Universe”) is a fictional future setting for a number of hard science fiction novels written by Arkady and B ...

Body and mind alterations

* Biohacking/ Amateur biotechnicians * Artificial organs * Additional or improved senses **

X-ray vision In science fiction stories or superhero comics, X-ray vision is the supernatural ability to see through normally opaque physical objects at the discretion of the holder of this superpower. The most famous possessor of this ability is DC Comics' i ...

Cloning Cloning is the process of producing individual organisms with identical or virtually identical DNA, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction. In the field of biotechnology, c ...

* Exocortex *

Genetic engineering Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology. It is a set of technologies used to change the genetic makeup of cells, including ...

** Super race *

Intelligence amplification Intelligence amplification (IA) (also referred to as cognitive augmentation, machine augmented intelligence and enhanced intelligence) refers to the effective use of information technology in augmenting human intelligence. The idea was first pr ...

Invisibility Invisibility is the state of an object that cannot be seen. An object in this state is said to be ''invisible'' (literally, "not visible"). The phenomenon is studied by physics and perceptual psychology. Since objects can be seen by light i ...

Life extension Life extension is the concept of extending the human lifespan, either modestly through improvements in medicine or dramatically by increasing the maximum lifespan beyond its generally-settled limit of 125 years. Several researchers in the area ...

Biological immortality Biological immortality (sometimes referred to as bio-indefinite mortality) is a state in which the rate of mortality from senescence is stable or decreasing, thus decoupling it from chronological age. Various unicellular and multicellular species, ...

, Universal immortalism and

immortality Immortality is the concept of eternal life. Some modern species may possess biological immortality. Some scientists, futurists, and philosophers have theorized about the immortality of the human body, with some suggesting that human immorta ...

Cryonics Cryonics (from el, κρύος ''kryos'' meaning 'cold') is the low-temperature freezing (usually at ) and storage of human remains, with the speculative hope that resurrection may be possible in the future. Cryonics is regarded with skeptic ...

Digital immortality Digital immortality (or "virtual immortality") is the hypothetical concept of storing (or transferring) a person's personality in digital substrate, i.e., a computer, robot or cyberspace (mind uploading). The result might look like an avatar beha ...

Mind uploading Mind uploading is a speculative process of whole brain emulation in which a brain scan is used to completely emulate the mental state of the individual in a digital computer. The computer would then run a simulation of the brain's information pr ...

Organ transplantation Organ transplantation is a medical procedure in which an organ is removed from one body and placed in the body of a recipient, to replace a damaged or missing organ. The donor and recipient may be at the same location, or organs may be transpor ...

Organlegging Organ theft is the forcible removal of a person's organs to be used as transplants and sold on the black market. While some cases of organ theft are urban legends, others have been found to be true. It is also a commonly used trope in science ...

Prosthetics In medicine, a prosthesis (plural: prostheses; from grc, πρόσθεσις, prósthesis, addition, application, attachment), or a prosthetic implant, is an artificial device that replaces a missing body part, which may be lost through trau ...

Memory Memory is the faculty of the mind by which data or information is encoded, stored, and retrieved when needed. It is the retention of information over time for the purpose of influencing future action. If past events could not be remember ...

** Memory erasure/editing ** Memory sharing *** Group mind **

Mind control Brainwashing (also known as mind control, menticide, coercive persuasion, thought control, thought reform, and forced re-education) is the concept that the human mind can be altered or controlled by certain psychological techniques. Brainwashin ...

** Mind swap **

** Neural implants to directly interface with machinery * Psi powers and psychic phenomena ** Clairvoyance **

Precognition Precognition (from the Latin 'before', and 'acquiring knowledge') is the purported psychic phenomenon of seeing, or otherwise becoming directly aware of, events in the future. There is no accepted scientific evidence that precognition is a ...

Pyrokinesis Pyrokinesis is the purported List of psychic abilities, psychic ability allowing a person to create and control fire with the mind. As with other parapsychological phenomena, there is no conclusive evidence in support of the actual existence of p ...

** Retrocognition **

Telepathy Telepathy () is the purported vicarious transmission of information from one person's mind to another's without using any known human sensory channels or physical interaction. The term was first coined in 1882 by the classical scholar Frederic ...

Telekinesis Psychokinesis (from grc, ψυχή, , soul and grc, κίνησις, , movement, label=ㅤ), or telekinesis (from grc, τηλε, , far off and grc, κίνησις, , movement, label=ㅤ), is a hypothetical psychic ability allowing a person ...

Parasitism Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson ha ...

Psychedelia Psychedelia refers to the psychedelic subculture of the 1960s and the psychedelic experience. This includes psychedelic art, psychedelic music and style of dress during that era. This was primarily generated by people who used psychedelic ...

* Resizing (size-changing, miniaturization, magnification, shrinking, and enlargement) *

Shapeshifting In mythology, folklore and speculative fiction, shape-shifting is the ability to physically transform oneself through an inherently superhuman ability, divine intervention, demonic manipulation, sorcery, spells or having inherited the ...

Superhuman strength Superhuman strength is a superpower commonly invoked in fiction and other literary works such as mythology. A fictionalized representation of the phenomenon of hysterical strength, it is the power to exert force and lift weights beyond what is ph ...

Teleportation Teleportation is the hypothetical transfer of matter or energy from one point to another without traversing the physical space between them. It is a common subject in science fiction literature and in other popular culture. Teleportation is oft ...

Transhumanism Transhumanism is a philosophical and intellectual movement which advocates the enhancement of the human condition by developing and making widely available sophisticated technologies that can greatly enhance longevity and cognition. Transhuma ...

and

Posthumanism Posthumanism or post-humanism (meaning "after humanism" or "beyond humanism") is an idea in continental philosophy and critical theory responding to the presence of anthropocentrism in 21st century thought. It encompasses a wide variety of br ...

Habitats

* Artificial worlds * Alien Zoo—a zoo where humans are kept as exhibits *

Arcologies Arcology, a portmanteau of "architecture" and "ecology",. is a field of creating architectural design principles for very densely populated and ecologically low-impact human habitats. The term was coined in 1969 by architect Paolo Soleri, who be ...

—enormous habitats (hyperstructures) of extremely high human population density *

Cyberspace Cyberspace is a concept describing a widespread interconnected digital technology. "The expression dates back from the first decade of the diffusion of the internet. It refers to the online world as a world 'apart', as distinct from everyday re ...

—the new, virtual territory of societal interaction * Domed city *

Floating city ''Floating City'' () is a 2012 Chinese-Hong Kong drama film directed by Yim Ho. Premise The story of a self-made man in a rapidly changing Hong Kong at the end of British Colonial rule. Reception ''Exclaim!'' writer Robert Bell said "...the su ...

* Future of the Earth **

Climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...

—science fiction dealing with effects of anthropogenic

climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...

and

global warming In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...

at the end of the

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...

era *

Megacity A megacity is a very large city, typically with a population of more than 10 million people. Precise definitions vary: the United Nations Department of Economic and Social Affairs in its 2018 "World Urbanization Prospects" report counted urban ...

Seasteading Seasteading is the concept of creating permanent dwellings at sea, called seasteads, in international waters outside the territory claimed by any government. No one has yet created a structure on the high seas that has been recognized as a sov ...

and ocean colonization ** Pirate utopia *

Reality Television Reality television is a genre of television programming that documents purportedly unscripted real-life situations, often starring unfamiliar people rather than professional actors. Reality television emerged as a distinct genre in the early 1 ...

Space colonization Space colonization (also called space settlement or extraterrestrial colonization) is the use of outer space or celestial bodies other than Earth for permanent habitation or as extraterrestrial territory. The inhabitation and territor ...

** Colonization of the Moon ** Pantropy ** Other planets ***

Desert planet A desert planet, also known as a dry planet, an arid planet, or a dune planet, is a theoretical type of terrestrial planet with a surface consistency similar to Earth's hot deserts. History A 2011 study suggested that not only are life-sustaini ...

****

Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...

** Terraformed planets * Space stations and habitats *

Underground city An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of th ...

Political themes

Adhocracy Adhocracy is a flexible, adaptable and informal form of organization that is defined by a lack of formal structure that employs specialized multidisciplinary teams grouped by functions. It operates in an opposite fashion to a bureaucracy. The ter ...

Anarcho-capitalism Anarcho-capitalism (or, colloquially, ancap) is an anti-statist, libertarian, and anti-political philosophy and economic theory that seeks to abolish centralized states in favor of stateless societies with systems of private property en ...

Capitalism Capitalism is an economic system based on the private ownership of the means of production and their operation for profit. Central characteristics of capitalism include capital accumulation, competitive markets, price system, private ...

Evil corporation An evil corporation is a trope in popular culture that portrays a corporation as ignoring social responsibility, morality, ethics, and sometimes laws in order to make profit for its shareholders. In rare cases, the corporation may be well inten ...

** Megacorporation **

Neo-feudalism Neo-feudalism or new feudalism is the contemporary rebirth of policies of governance, economy, and public life, reminiscent of those which were present in many feudal societies. Such aspects include, but are not limited to: Unequal rights and lega ...

* Cognitive liberty *

Dystopia A dystopia (from Ancient Greek δυσ- "bad, hard" and τόπος "place"; alternatively cacotopiaCacotopia (from κακός ''kakos'' "bad") was the term used by Jeremy Bentham in his 1818 Plan of Parliamentary Reform (Works, vol. 3, p. 493). ...

s and

utopia A utopia ( ) typically describes an imaginary community or society that possesses highly desirable or nearly perfect qualities for its members. It was coined by Sir Thomas More for his 1516 book '' Utopia'', describing a fictional island soc ...

s **

Environmental pollution Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, th ...

Overpopulation Overpopulation or overabundance is a phenomenon in which a species' population becomes larger than the carrying capacity of its environment. This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale ...

** Technological utopianism **

Totalitarianism Totalitarianism is a form of government and a political system that prohibits all opposition parties, outlaws individual and group opposition to the state and its claims, and exercises an extremely high if not complete degree of control and regu ...

Galactic empire Galactic empires are a common trope used in science fantasy and science fiction, particularly in works known as 'space operas'. Many authors have either used a galaxy-spanning empire as background or written about the growth and/or decline of ...

s * Government by algorithm *

Legal personality Legal capacity is a quality denoting either the legal aptitude of a person to have rights and liabilities (in this sense also called transaction capacity), or altogether the personhood itself in regard to an entity other than a natural pers ...

Libertarianism Libertarianism (from french: libertaire, "libertarian"; from la, libertas, "freedom") is a political philosophy that upholds liberty as a core value. Libertarians seek to maximize autonomy and political freedom, and minimize the state's en ...

Mass surveillance Mass surveillance is the intricate surveillance of an entire or a substantial fraction of a population in order to monitor that group of citizens. The surveillance is often carried out by local and federal governments or governmental organizati ...

* Mind reading and

mind control Brainwashing (also known as mind control, menticide, coercive persuasion, thought control, thought reform, and forced re-education) is the concept that the human mind can be altered or controlled by certain psychological techniques. Brainwashin ...

National security state National security, or national defence, is the security and defence of a sovereign state, including its citizens, economy, and institutions, which is regarded as a duty of government. Originally conceived as protection against military attac ...

* Post-scarcity economy *

Socialism Socialism is a left-wing economic philosophy and movement encompassing a range of economic systems characterized by the dominance of social ownership of the means of production as opposed to private ownership. As a term, it describes th ...

** Nanosocialism *

Technoethics The ethics of technology is a sub-field of ethics addressing the ethical questions specific to the Technology Age, the transitional shift in society wherein personal computers and subsequent devices provide for the quick and easy transfer of info ...

Bioethics Bioethics is both a field of study and professional practice, interested in ethical issues related to health (primarily focused on the human, but also increasingly includes animal ethics), including those emerging from advances in biology, me ...

Technophobia Technophobia (from Greek τέχνη ''technē'', "art, skill, craft" and φόβος ''phobos'', "fear"), also known as technofear, is the fear or dislike of advanced technology or complex devices, especially computers. Although there are numero ...

* Techno-progressivism *

Terrorism Terrorism, in its broadest sense, is the use of criminal violence to provoke a state of terror or fear, mostly with the intention to achieve political or religious aims. The term is used in this regard primarily to refer to intentional violen ...

** Bio-terrorism **

Eco-terrorism Eco-terrorism is an act of violence which is committed in support of environmental causes, against people or property. The United States Federal Bureau of Investigation (FBI) defines eco-terrorism as "...the use or threatened use of violence o ...

* Totalitarianism vs. Libertarianism

Technologies

* Artificial gravity *

Asteroid mining Asteroid mining is the hypothetical exploitation of materials from asteroids and other minor planets, including near-Earth objects. Notable asteroid mining challenges include the high cost of spaceflight, unreliable identification of asteroids ...

* Astronomical engineering *

Brain–computer interface A brain–computer interface (BCI), sometimes called a brain–machine interface (BMI) or smartbrain, is a direct communication pathway between the brain's electrical activity and an external device, most commonly a computer or robotic limb. B ...

Cloaking device A cloaking device is a hypothetical or fictional stealth technology that can cause objects, such as spaceships or individuals, to be partially or wholly invisible to parts of the electromagnetic (EM) spectrum. Fictional cloaking devices have be ...

Emerging technologies Emerging technologies are technologies whose development, practical applications, or both are still largely unrealized. These technologies are generally new but also include older technologies finding new applications. Emerging technologies a ...

Robots "\n\n\n\n\nThe robots exclusion standard, also known as the robots exclusion protocol or simply robots.txt, is a standard used by websites to indicate to visiting web crawlers and other web robots which portions of the site they are allowed to visi ...

* Self-replicating machines *

Star lifting Star lifting is any of several hypothetical processes by which a sufficiently advanced civilization (specifically, one of Kardashev-II or higher) could remove a substantial portion of a star's matter which can then be re-purposed, while possibly ...

and stellar engineering * Stasis device * Total conversion as energy source *

Mecha In science fiction, or mechs are giant robots or machines controlled by people, typically depicted as humanoid walking vehicles. The term was first used in Japanese after shortening the English loanword or , but the meaning in Japanese is ...

* Megascale engineering and

planetary engineering Planetary engineering is the development and application of technology for the purpose of influencing the environment of a planet. Planetary engineering encompasses a variety of methods such as terraforming, seeding, and geoengineering. Widely ...

Megastructure A megastructure is a very large artificial object, although the limits of precisely how large vary considerably. Some apply the term to any especially large or tall building. Some sources define a megastructure as an enormous self-supporting a ...

s ** Dyson sphere * Molecular manufacturing and

Nanotechnology Nanotechnology, also shortened to nanotech, is the use of matter on an atomic, molecular, and supramolecular scale for industrial purposes. The earliest, widespread description of nanotechnology referred to the particular technological goal ...

** Molecular assembler *Alien technology *

Virtual reality Virtual reality (VR) is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games), edu ...

, mixed reality,

augmented reality Augmented reality (AR) is an interactive experience that combines the real world and computer-generated content. The content can span multiple sensory modalities, including visual, auditory, haptic, somatosensory and olfactory. AR can be de ...

Infosphere Infosphere (''information'' + -''sphere''), analogous to a biosphere, is a metaphysical realm of information, data, knowledge, and communication, populated by informational entities called ''inforgs'' (or, ''informational organisms''). Though o ...

Metaverse In science fiction, the "metaverse" is a hypothetical iteration of the Internet as a single, universal, and immersive virtual world that is facilitated by the use of virtual reality (VR) and augmented reality (AR) headsets. In colloquial usa ...

Travel

Accidental travel Accidental travel is a speculative fiction plot device in which ordinary people accidentally find themselves outside of their normal place or time, often for no apparent reason, a particular type of the “ fish-out-of-water” plot. In Russian ...

Colonization Colonization, or colonisation, constitutes large-scale population movements wherein migrants maintain strong links with their, or their ancestors', former country – by such links, gain advantage over other inhabitants of the territory. When ...

of other planets, moons,

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

s, etc. **

Embryo space colonization Embryo space colonization is a theoretical interstellar space colonization concept that involves sending a robotic mission to a habitable terrestrial planet, dwarf planet, minor planet or natural satellite transporting frozen early-stage human ...

Generation ship A generation ship, or generation starship, is a hypothetical type of interstellar ark starship that travels at sub-light speed. Since such a ship might require hundreds to thousands of years to reach nearby stars, the original occupants of a ge ...

** Interstellar ark **

Uploaded astronaut Mind uploading is a speculative process of whole brain emulation in which a brain scan is used to completely emulate the mental state of the individual in a digital computer. The computer would then run a simulation of the brain's information pr ...

Terraforming Terraforming or terraformation ("Earth-shaping") is the hypothetical process of deliberately modifying the atmosphere, temperature, surface topography or ecology of a planet, moon, or other body to be similar to the environment of Earth to make ...

Space exploration Space exploration is the use of astronomy and space technology to explore outer space. While the exploration of space is carried out mainly by astronomers with telescopes, its physical exploration though is conducted both by uncrewed robo ...

Interstellar travel Interstellar travel is the hypothetical travel of spacecraft from one star system, solitary star, or planetary system to another. Interstellar travel is expected to prove much more difficult than interplanetary spaceflight due to the vast diffe ...

Starship A starship, starcraft, or interstellar spacecraft is a theoretical spacecraft designed for traveling between planetary systems. The term is mostly found in science fiction. Reference to a "star-ship" appears as early as 1882 in '' Oahspe: A Ne ...

s *** Faster-than-light travel and communications **** Hyperspace ****

Slipstream A slipstream is a region behind a moving object in which a wake of fluid (typically air or mustard) is moving at velocities comparable to that of the moving fluid, relative to the ambient fluid through which the object is churning. The term sli ...

****

Warp drive A warp drive or a drive enabling space warp is a fictional superluminal spacecraft propulsion system in many science fiction works, most notably ''Star Trek'', and a subject of ongoing physics research. The general concept of "warp drive" was ...

s ****

Wormhole A wormhole ( Einstein-Rosen bridge) is a hypothetical structure connecting disparate points in spacetime, and is based on a special solution of the Einstein field equations. A wormhole can be visualized as a tunnel with two ends at separate ...

s ****

Ansible An ansible is a category of fictional devices or technology capable of near-instantaneous or faster-than-light communication. It can send and receive messages to and from a corresponding device over any distance or obstacle whatsoever with no d ...

s ***Close to light speed ****

Bussard ramjet The Bussard ramjet is a theoretical method of spacecraft propulsion proposed in 1960 by the physicist Robert W. Bussard, popularized by Poul Anderson's novel '' Tau Zero'', Larry Niven in his ''Known Space'' series of books, Vernor Vinge in h ...

s ****

Ursula K. Le Guin Ursula Kroeber Le Guin (; October 21, 1929 – January 22, 2018) was an American author best known for her works of speculative fiction, including science fiction works set in her Hainish universe, and the '' Earthsea'' fantasy series. She was ...

's NAFAL ships, and the

Twin paradox In physics, the twin paradox is a thought experiment in special relativity involving identical twins, one of whom makes a journey into space in a high-speed rocket and returns home to find that the twin who remained on Earth has aged more. T ...

***Much slower than light ****

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Sleeper ship A sleeper is a person who is sleeping. Sleeper may also refer to: Arts and entertainment Characters * Sleeper (Marvel Comics), a Nazi German robot utilized by the Red Skull in Marvel Comics * The Sleeper (Wild Cards), a character in the Wild Ca ...

** Space stations *

** Teletransporter *

Time travel Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a ...

: time travel can be used as a plot device to explore parallel universes. While alternate history has its own category (see above), it often occurs in time travel stories as well. ** Alternate future **

Time loop The time loop or temporal loop is a plot device in fiction whereby characters re-experience a span of time which is repeated, sometimes more than once, with some hope of breaking out of the cycle of repetition. The term "time loop" is sometimes us ...

* Travel to the Earth's center **

Hollow Earth The Hollow Earth is a concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproven, first tentatively by Pierre Bougue ...

References

{{DEFAULTSORT:List Of Science Fiction Themes Science fiction themes

Overarching themes

Beings and entities

Body and mind alterations

Habitats

Political themes

Technologies

Travel

See also

References