Celestial sphere: Difference between revisions
From Glossary of Meteorology
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<div class="definition"><div class="short_definition">The apparent sphere of infinite radius, having Earth as its center.</div><br/> <div class="paragraph">It is upon the | <div class="definition"><div class="short_definition">The apparent sphere of infinite radius, having Earth as its center.</div><br/> <div class="paragraph">It is upon the "inner surface" of this sphere that all heavenly bodies, the [[ecliptic]], and the [[celestial equator]] appear. Disregarding the effects of [[topography]] and [[refraction]] near the [[horizon]], for practical purposes half of this sphere may be considered visible from any point on the earth's surface at any time.</div><br/> </div> | ||
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Latest revision as of 13:48, 20 February 2012
celestial sphere
The apparent sphere of infinite radius, having Earth as its center.
It is upon the "inner surface" of this sphere that all heavenly bodies, the ecliptic, and the celestial equator appear. Disregarding the effects of topography and refraction near the horizon, for practical purposes half of this sphere may be considered visible from any point on the earth's surface at any time.
