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Answer the following : Why pole star a...

Answer the following :
Why pole star a important in sky observation?

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Since Pole star occupies a position on the earth.s axis passing through the north pole. Therefore, it always points the north in a sky map. The position of Pole Star can be also indicated by constellation of Saptarishi i.n. The Great Bear on one side and Sharmishtha i.e. Cassiopeia on the other side.
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