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Monday, June 16th, 2025
the Week of Proper 6 / Ordinary 11
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Bible Encyclopedias
Elongation

1911 Encyclopedia Britannica

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strictly "lengthening"; in astronomy, the apparent angular distance of a heavenly body from its centre of motion, as seen from the earth; designating especially the angular distance of the planet Mercury or Venus from the sun, or the apparent angle between a satellite and its primary. The greatest elongation of Venus is about 45°; that of Mercury generally ranges between 18° and 27°.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Elongation'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​e/elongation.html. 1910.
 
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