The North Celestial Pole is the point in the sky directly above the Earth's North Pole. It is the location where the Earth's axis of rotation extends into space. This point is significant for navigation and astronomy, as it helps observers locate stars and constellations in the northern hemisphere. At the North Celestial Pole, the star Polaris, also known as the North Star, is located very close to this point. Polaris serves as a reliable reference for finding true north, making it an essential tool for sailors and explorers throughout history.