The North Star, also known as Polaris, is a bright star located nearly directly above the Earth's northern axis. It is part of the Ursa Minor constellation and is often used for navigation because it remains relatively fixed in the sky while other stars appear to move. Its position makes it a reliable point of reference for travelers in the Northern Hemisphere. Polaris is approximately 433 light-years away from Earth and is classified as a supergiant star. It is about 2,500 times more luminous than the Sun. Due to its brightness and position, the North Star has been an important guide for explorers and sailors throughout history.