The term for a group of stars that form a recognizable pattern is called a constellation. Constellations have been used throughout history as navigational aids and for storytelling, contributing to cultural myths and legends. There are 88 officially recognized constellations, which make up the entire celestial sphere as viewed from Earth. These patterns help astronomers locate specific stars and celestial objects in the sky. Some well-known constellations include Orion, Ursa Major, and Cassiopeia. While many ancient cultures had their own interpretations of these star patterns, modern naming conventions are based largely on the traditions of Western astronomy.