The time taken by a star to come back to its exact previous position in the night sky, every next night is known as
A
sidereal day
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B
light year
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C
solar day
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D
zodiacal duration
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Solution
The correct option is A sidereal day The time taken by a star to come back to its exact previous position in the night sky, every next night is known as Sidereal day or star day.