diurnal motion

English

diurnal motion (uncountable)

(astronomy) The apparent westward rotation of the celestial sphere, along with the apparent westward revolution of celestial objects, around the the celestial poles due to prograde (eastward) rotation of planet Earth relative to the seemingly fixed stars – completed once each sidereal day (about 23 hours, 56 minutes, 4 seconds).

单词	diurnal motion
释义	diurnal motion English Noun diurnal motion (uncountable) (astronomy) The apparent westward rotation of the celestial sphere, along with the apparent westward revolution of celestial objects, around the the celestial poles due to prograde (eastward) rotation of planet Earth relative to the seemingly fixed stars – completed once each sidereal day (about 23 hours, 56 minutes, 4 seconds).
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