Concept:The Polestar, also called the North Star, is the star that appears fixed in the northern sky because it lies almost exactly above Earth's north pole.Explanation:Earth rotates on its axis. The imaginary line of this axis points toward a star in the north. That star is called the Pole Star or Polaris. It stays in the same spot all night because it is aligned with Earth's axis. Other stars appear to move across the sky, but the Polestar seems motionless. It always indicates the north direction. Therefore, the Polestar is known as the North Star.
