Chemical abundances research focuses on studying the relative amounts of different chemical elements present in various astronomical objects, such as stars, planets, galaxies, and interstellar gas clouds. By analyzing the chemical composition of these objects, researchers can gain insights into their formation and evolution processes, as well as the conditions that existed in the early universe. This research area is important for understanding the origins of the elements, the chemical enrichment of the universe, and the factors influencing the diversity of chemical compositions observed in different astronomical objects.