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  2. Mesoplanet - Wikipedia

    en.wikipedia.org/wiki/Mesoplanet

    The term was coined in Asimov's essay "What's in a Name?", which first appeared in the Los Angeles Times in the late 1980s [1] and was reprinted in his 1990 book Frontiers; [2] the term was later revisited in his essay, "The Incredible Shrinking Planet" which appeared first in The Magazine of Fantasy and Science Fiction [3] and then in the anthology The Relativity of Wrong (1988).

  3. Definitions of science fiction - Wikipedia

    en.wikipedia.org/wiki/Definitions_of_science_fiction

    "Science fiction is that form of literature which deals with the effects of technological change in an imagined future, an alternative present or a reconceived history". [38] David Pringle. 1985. "Science fiction is a form of fantastic fiction which exploits the imaginative perspectives of modern science". [39] Kim Stanley Robinson. 1987.

  4. Fictional universe - Wikipedia

    en.wikipedia.org/wiki/Fictional_universe

    A fictional universe, also known as an imagined universe or a constructed universe, is the internally consistent fictional setting used in a narrative or a work of art. This concept is most commonly associated with works of fantasy and science fiction , and can be found in various forms such as novels , comics , films , television shows , video ...

  5. Space travel in science fiction - Wikipedia

    en.wikipedia.org/.../Space_travel_in_science_fiction

    Rocket on cover of Other Worlds sci-fi magazine, September 1951. Space travel, [1]: 69 [2]: 209–210 [3]: 511–512 or space flight [2]: 200–201 [4] (less often, starfaring or star voyaging [2]: 217, 220 ) is a science fiction theme that has captivated the public and is almost archetypal for science fiction. [4]

  6. Extrasolar planets in fiction - Wikipedia

    en.wikipedia.org/wiki/Extrasolar_planets_in_fiction

    Most extrasolar planets in fiction are similar to Earth—referred to in the Star Trek franchise as Class M planets—and serve only as settings for the narrative. [1] [2] One reason for this, writes Stephen L. Gillett [Wikidata] in The Greenwood Encyclopedia of Science Fiction and Fantasy, is to enable satire. [3]

  7. Extraterrestrial life - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_life

    The Big Bang took place 13.8 billion years ago, the Solar System was formed 4.6 billion years ago, and the first hominids appeared 6 million years ago. Life on other planets may have started, evolved, given birth to extraterrestrial intelligences, and perhaps even faced a planetary extinction event millions or even billions of years ago.

  8. Fictional planets of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Fictional_planets_of_the...

    Schematic diagram of the orbits of the fictional planets Vulcan, Counter-Earth, and Phaëton in relation to the five innermost planets of the Solar System.. Fictional planets of the Solar System have been depicted since the 1700s—often but not always corresponding to hypothetical planets that have at one point or another been seriously proposed by real-world astronomers, though commonly ...

  9. Tralfamadore - Wikipedia

    en.wikipedia.org/wiki/Tralfamadore

    Science-fiction scholar Brian Stableford suggested that Tralfamadore here exists in a different fictional universe than the planet referred to in Sirens of Titan, but where the original organic inhabitants have not died out. [3]