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Perihelion   Listen
Perihelion

noun
(pl. perihelia)
1.
Periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun.





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"Perihelion" Quotes from Famous Books



... replies to which largely depend both the development of knowledge and the conviction of its reality. In the present instance, the answer afforded may be said to have laid the foundation of this branch of astronomy. Halley's comet punctually reappeared on Christmas Day, 1758, and effected its perihelion passage on the 12th of March following, thus proving beyond dispute that some at least of these erratic bodies are domesticated within our system, and strictly conform, if not to its unwritten customs (so to speak), ...
— A Popular History of Astronomy During the Nineteenth Century - Fourth Edition • Agnes M. (Agnes Mary) Clerke


Words linked to "Perihelion" :   periapsis, point of periapsis, aphelion


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