What is the purpose of stars in an aerial shell?

Stars in an aerial shell are pyrotechnic devices that produce visual effects when ignited during a fireworks display. They create various colors and patterns in the sky by burning different chemical compositions, contributing to the overall aesthetic of the show. Each star is designed to ignite at a specific time and height, enhancing the spectacle and ensuring synchronization with other effects. Ultimately, they are essential for creating the vibrant and dynamic visual experience associated with fireworks.