A constellation is a group of stars that form a recognizable pattern in the night sky. These patterns are often named after mythological figures, animals, or objects, making them easier to remember. There are 88 officially recognized constellations, as defined by the International Astronomical Union. Some well-known examples include Orion, Ursa Major, and Cassiopeia. Constellations have been used for centuries for navigation and storytelling. Ancient cultures relied on them to guide travelers and mark the changing seasons. Today, astronomers study constellations to help locate celestial objects and understand the structure of our Milky Way galaxy.