Question

what is a pole star​

Answer 1

Answer:

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Explanation:

A pole star or polar star is a star, preferably bright, closely aligned to the axis of rotation of an astronomical object.

A pole star or polar star is a star, preferably bright, closely aligned to the axis of rotation of an astronomical object.Currently, Earth's pole stars are Polaris (Alpha Ursae Minoris), a magnitude 2 star aligned approximately with its northern axis, and a pre-eminent star in celestial navigation, and Polaris Australis (Sigma Octantis), a much dimmer star. A couple thousand years ago, Kochab and Pherkad were twin northern pole stars, though neither was as close to the pole as Polaris is now.

Answer 2

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.