When it comes to synonyms for the term "stellar astronomy," there are a few options that come to mind. The first is "astrophysics," which deals with the physical properties of celestial objects such as stars, planets, and galaxies. Another synonym is "cosmology," which focuses on the origins and evolution of the universe as a whole, including the study of dark matter and dark energy. "Celestial mechanics" refers to the study of the motion of celestial objects, while "observational astronomy" involves the observation and analysis of astronomical events and phenomena. Finally, "extragalactic astronomy" focuses on the study of objects and phenomena beyond our own Milky Way galaxy.