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  2. Earth in science fiction - Wikipedia

    en.wikipedia.org/wiki/Earth_in_science_fiction

    The overwhelming majority of fiction is set on or features the Earth, as the only planet home to humans or known to have life. This also holds true of science fiction, despite perceptions to the contrary. Works that focus specifically on Earth may do so holistically, treating the planet as one semi-biological entity.

  3. Gravity of Earth - Wikipedia

    en.wikipedia.org/wiki/Gravity_of_Earth

    The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation (from mass distribution within Earth) and the centrifugal force (from the Earth's rotation). [2][3] It is a vector quantity, whose direction coincides with a plumb bob and strength or magnitude is given by the norm .

  4. Mission of Gravity - Wikipedia

    en.wikipedia.org/wiki/Mission_of_Gravity

    Followed by. Star Light. Mission of Gravity is a science fiction novel by American writer Hal Clement. The novel was serialized in Astounding Science Fiction magazine in April–July 1953. Its first hardcover book publication was in 1954, and it was first published as a paperback book in 1958. Along with the novel, many editions (and most ...

  5. Gravitational acceleration - Wikipedia

    en.wikipedia.org/wiki/Gravitational_acceleration

    Gravitational acceleration. In physics, gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). This is the steady gain in speed caused exclusively by gravitational attraction. All bodies accelerate in vacuum at the same rate, regardless of the masses or compositions of the ...

  6. Science in science fiction - Wikipedia

    en.wikipedia.org/wiki/Science_in_science_fiction

    Science in science fiction is the study or of how science is portrayed in works of science fiction, including novels, stories, and films. It covers a large range of topics. Hard science fiction is based on engineering or the "hard" sciences (for example, physics, astronomy, or chemistry). Soft science fiction is based on the "soft" sciences ...

  7. Cities in Flight - Wikipedia

    en.wikipedia.org/wiki/Cities_in_Flight

    The novella "Sargasso of Lost Cities", Blish's third "Cities in Flight" story, was originally published in Two Complete Science-Adventure Books in 1953.. Cities in Flight is a four-volume series of science fiction novels and short stories by American writer James Blish, originally published between 1950 and 1962, which were first known collectively as the "Okie" novels.

  8. Subterranean fiction - Wikipedia

    en.wikipedia.org/wiki/Subterranean_fiction

    Subterranean fiction is a subgenre of speculative fiction, science fiction, or fantasy which focuses on fictional underground settings, sometimes at the center of the Earth or otherwise deep below the surface. The genre is based on, and has in turn influenced, the Hollow Earth theory. The earliest works in the genre were Enlightenment -era ...

  9. Science fiction - Wikipedia

    en.wikipedia.org/wiki/Science_fiction

    Science fiction (sometimes shortened to SF or sci-fi) 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 universes, and extraterrestrial life. It often explores human responses to changes in science and technology.