Zenith

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Zenith Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


  • the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected

Definitions from Wiktionary


  • the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected

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Zenith Meaning and Definition in Wikipedia


In astronomy, the zenith is a point "above" a particular location, in the sky. "Above" means in the opposite direction of gravity at that location. The zenith is the opposite of the nadir. The nadir is in the direction the direction that gravity pulls. The zenith is not a real point, it is used as a reference for the location of other things in the sky.

For scientists, the zenith is the direction of reference for measuring the zenith angle. The zenith angle is the angle between a place in the sky (usually a star) and the local zenith.



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