heliocentrism
Noun

heliocentrism (uncountable)

  1. (astronomy, history) The theory that the sun is the center of the universe.
    • 1923, Felix Adler, "The Reconstruction of the Spiritual Ideal," American Ethical Union, 68.
      Geocentrism has been displaced by heliocentrism. Heliocentrism, in turn, the claim of the sun, surrounded by its satellites, to a sovereign place in the heavens, has become ridiculous in the face of the wilderness of suns that people the abysses beyond us.
    • 2019, Elizabeth Howell, “PBS Series Takes Astronomy Buffs Back in Time With ‘Ancient Skies’”, Space.com
      It wasn't until the Renaissance that scientists such as Nicolaus Copernicus and Galileo Galilei showed proof for heliocentrism, or the idea that the planets moved around the sun.
    Synonyms: heliocentricity
    Antonyms: geocentrism
  2. (informal) The phenomenon of the Earth revolving around the Sun.
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