Stellar composition refers to the elements and compounds that make up a star. This includes the abundance of elements such as hydrogen, helium, carbon, oxygen, and iron, among others. Studying the composition of stars can provide valuable insight into their formation, evolution, and behavior. By analyzing the spectra of starlight, scientists can determine the chemical composition of stars and gain a better understanding of the processes that occur within them. The study of stellar composition is an important aspect of astrophysics and helps to further our understanding of the universe.