Question

What is pole star ? Explain with a help of a diagram

Answer 1

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

With regard to planet Earth, the pole star refers to Polaris (Alpha Ursae Minoris), a magnitude 2 star aligned approximately with its northern axis, and a pre-eminent star in celestial navigation.

Answer 2

Pole star or polar star is the name of polaris in the constellation of ursa minor as it is the star closest to the earth’s celestial north pole