How are constellations used in navigation?

Constellations are used in navigation to determine direction and location in the night sky.

Navigators have used the stars for centuries to determine their position on the Earth. By observing the positions of constellations, sailors and explorers could determine their latitude and longitude. Latitude is the measurement of how far north or south of the equator a location is, while longitude is the measurement of how far east or west of the prime meridian a location is.

One of the most well-known constellations used in navigation is the North Star, also known as Polaris. This star is located almost directly above the Earth's North Pole and appears to remain stationary in the sky. By locating the North Star, navigators can determine their latitude in the Northern Hemisphere.

Other constellations, such as the Big Dipper and Orion, can also be used to determine direction and location. By identifying these constellations and their positions in the sky, navigators can determine their heading and location on the Earth.