Question

What is pole star? And how captain of ships know way from pole star?

Answer 1

Explanation:

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.

Answer 2

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.Because the height of Polaris above the horizon is equal to the latitude at a particular location, sailors could use the star to estimate their location. They would, for example, turn west or east once a particular star selected for navigation was two finger-‐widths above the horizon.