Pole star


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The North Star, also known as Polaris, has been considered to be the most important star in the sky for ages. In contrary to other stars, this star seems to stand motionless. In the ancient times this proud and majestic queen of the northern sky was a guide for navigation, therefore it is commonly known as the Sea Star.

The North Star is a naked-eye star nearest to the celestial north pole. As a result of the change of direction of Earth’s rotation, various stars in various periods become the North Star. At present, the North Star is Alfa Ursae Minoris, the brightest star in the constellation Smaller Bear. In 5 thousand years the Northern Star will be Alfa Dra, Thuban in the constellation Dragon and in 12 thousand years Vega, the brightest star in the constellation Lyra, will become the North Star. The star in the constellation Small Bear will be again the nearest to the celestial north pole in roughly 25 thousand years. The North Star has a very prestigious position in the hierarchy of celestial objects. Therefore, in the ancient times this star was also known as the Heaven’s Door. 

As a result of characteristic precessional motion of our plant the North Star embodies the unique position in the night sky. Usually only the brightest stars in a given constellation can become the Heaven’s Door. The distance between Earth and the North Star is over one thousand light years. Only the largest celestial objects from a specific constellation can be Stella Maris. 

In the ancient times people did not have any complex navigation equipment. The only reference point in the night sky was the North Star used by travellers to find the northern direction. The North Star was a guide which contrary to other stars did not change its position in the night sky (it always lies in the north). When other stars are subject to principles of physics, the North Star seems to be majestic and dominant.