The Ring Nebula is a prominent example of a planetary nebula, representing the expanding, glowing outer layers of gas expelled from a dying star. These nebulae form during the late stages of stellar evolution, occurring after the star has shed its outer material. The structure observed, characterized by a distinct ring shape, is composed primarily of elements such as hydrogen, helium, and heavier elements processed within the star's core. Observing these ejected gas shells allows scientists to study the physical processes of stellar death and the mechanisms by which matter is redistributed into the interstellar medium.