Question

what is pole star and give reason
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Answer 1

Answer:

Polestar, also spelled pole star, also called (Northern Hemisphere) North Star, the brightest star that appears nearest to either celestial pole at any particular time. Owing to the precession of the equinoxes, the position of each pole describes a small circle in the sky over a period of 25,772 years.

Explanation:

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Answer 2

Explanation:

• The Pole Star is the star that is known to retain its position in the sky always.
• We can locate the position of the Pole Star with the help of the constellation Saptarishi. If an imaginary line is drawn joining the "pointer stars" of the Saptarishi and extended further, it will point to the Pole Star.
• Pole star lies along the direction of the axis of rotation of the earth. Since it lies on the axis of rotation of the Earth, it appears stationary for an observer on Earth.