Atmospheric refraction

http://astrothesaurus.org/uat/115

dcterms modified equal to or less than 2020-11-03T18:35:15.617Zequal to or more than 2020-11-03T18:35:15.617Z
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definition The shift in apparent direction of a celestial object caused by the bending of light while passing through the Earth's atmosphere. Since the density of the atmosphere decreases with altitude, the starlight will bend more as it continues down through the atmosphere. As a result, a star will appear higher in the sky than its true direction.
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contributor AAS_Frey.Katie original