Special effects and other production techniques allow creators to present a living visual image of an imaginary world not limited by the constraints of reality.
The need to portray imaginary settings or characters with properties and abilities beyond the reach of current reality obliges producers to make extensive use of specialized techniques of television production.
By the late 1990s, improved technology and more training and cross-training within the industry made all of these techniques easier to use, so that directors of individual episodes could make decisions to use one or more methods, so such artistic choices no longer needed to be baked into the series concept.
In the 1990s, CGI required expensive processors and customized applications, but by the 2000s (decade), computing power has pushed capabilities down to personal laptops running a wide array of software.
Models have been an essential tool in science fiction television since the beginning, when Buck Rogers took flight in spark-scattering spaceships wheeling across a matte backdrop sky.
As animation is completely free of the constraints of gravity, momentum, and physical reality, it is an ideal technique for science fiction and fantasy on television.
In a sense, virtually all animated series allow characters and objects to perform in unrealistic ways, so they are almost all considered to fit within the broadest category of speculative fiction (in the context of awards, criticism, marketing, etc.)
In recent years as technology has improved, this has become more common, notably since the development of the Massive software application permits producers to include hordes of non-human characters to storm a city or space station.
Bjo Trimble wrote letters to contacts in the National Fantasy Fan Foundation, asking people to organize their local friends to write to the network to demand the show remain on the air.
This became significant enough that lesser-known actors would come to conventions without requesting any appearance fee, simply to be allowed to sell their own autographs (commonly on publicity photos).
Today most events with actor appearances are organized by commercial promoters, though a number of fan-run conventions still exist, such as Toronto Trek and Shore Leave.
For decades, the majority of science fiction media fandom has been represented by males of all ages and for most of its modern existence, a fairly diverse racial demographic.
British television science fiction began in 1938 when the broadcast medium was in its infancy with the transmission of a partial adaptation of Karel Čapek's play R.U.R..
[4] Other cult British series in the science fiction genre include The Tomorrow People, Space: 1999, Blake's 7, Star Cops and Red Dwarf.
In the 1990s, Canada became an important player in live action speculative fiction on television, with dozens of series like Forever Knight, Robocop, and most notably The X-Files and Stargate SG-1.
Other primary aspects of Japanese science fiction television are the superhero tokusatsu (a term literally meaning special effects) series, pioneered by programs such as Moonlight Mask and Planet Prince.
Among the notable German language productions are: Danish television broadcast the children's TV-series Crash in 1984 about a boy who finds out that his room is a space ship.
Early Dutch television series were Morgen gebeurt het [nl] (Tomorrow it will happen), broadcast from 1957 to 1959, about a group of Dutch space explorers and their adventures, De duivelsgrot (The devil's cave), broadcast from 1963 to 1964, about a scientist who finds the map of a cave that leads to the center of the Earth and Treinreis naar de Toekomst (Train journey to the future) about two young children who are taken to the future by robots who try to recreate humanity, but are unable to give the cloned humans a soul.
The first Spanish SF series was Diego Valor, a 22 episode TV adaption of a radio show hero of the same name based on Dan Dare, aired weekly between 1958 and 1959.
Nero (2008) was a brutal SF comedy by Álex de la Iglesia, in the line of The Hitchhiker's Guide to the Galaxy, Red Dwarf, or Doctor Who, with 26 episodes of 35 minutes.
[13][14] The latest success is El ministerio del tiempo (The ministry of time), premiered on February 24, 2015 on TVE's main channel La 1.
[18][19] Serbia produced The Collector (Sakupljač), a science fiction television series based upon Zoran Živković's story, winner of a World Fantasy Award.