How long is the sidereal day, which is the time it takes for Earth to rotate exactly 360 degrees relative to distant stars?
Answer
About 23 hours and 56 minutes
The sidereal day is slightly shorter than the mean solar day, measuring about 23 hours and 56 minutes, because the Earth has moved slightly in its orbit during that time.
#Videos
Movements of the Earth - Earth's Revolution & Rotation - YouTube
Earth's Rotation & Revolution: Crash Course Kids 8.1 - YouTube
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