what are pole star?very very short answer
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Explanation:
pole star is the brightest star that appears nearest to either celestial pole at any particular time.
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Answer:
Pole Star is also called North Star(Northern Hemisphere).
It is the biggest star nearest to the celestial pole at any particular time.
Owing to the precession of equinoxes, the position of each pole describes a small circle in the sky over a period of 25,772 years.
At present,the Pole star is Polaris (an Ursae Minoris).
The location of the Northern Pole star has made it a convenient object for navigators to use in determining latitudes and North-south direction in the Northern Hemisphere.
The present southern polestar, Polaris Australis,also called Octantis, is barely visible to the naked eye .
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