Celestial Sphere (noun) Definition, Meaning & Examples

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noun
  1. the imaginary spherical shell formed by the sky, usually represented as an infinite sphere, the center of which is a given observer's position.
noun
  1. an imaginary sphere of infinitely large radius enclosing the universe so that all celestial bodies appear to be projected onto its surface
    Celestial Sphere (noun) Definition, Meaning & Examples

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