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on Twitter Sidereal Time is the time is takes for celestial
bodies to ascend and descend in the night sky. We know that
celestial bodies are in reality, fixed in their positions. The
reason for their dramatic movement in the night is because of
the rotation of the earth. This is the same reason why the Sun
and the Moon seem to rise and set. For the longest time, this
motion caused many philosophers and astronomers to assume that
the Earth was the center of the Universe. Fortunately later
astronomers like Copernicus were able to discern the true
movements of the Earth, Moon, and Sun helping to explain their
movements. The time that it takes for a star, planet or other
fixed celestial body to ascend and descend in the night sky is
also called sidereal period. Coincidentally this time
corresponds to the time it takes for the Earth to rotate one
revolution which is just under 24 hours. Sidereal time is not
like solar time which is measured by the mo