Theoretical astronomy deals with the exploration of celestial bodies, their properties and behavior, and the laws governing their motion in space. However, there are several synonymous terms used to describe this field of study. For instance, astrophysics is a similar term that encompasses the study of physical properties and processes of celestial objects. Cosmology is also closely related to theoretical astronomy, but it focuses more on understanding the origin and evolution of the entire universe. Celestial mechanics, on the other hand, is a branch of astronomy that deals with the motions and gravitational interactions between celestial bodies. Regardless of the chosen terminology, the overarching goal of theoretical astronomers is to uncover the mysteries of the cosmos through scientific inquiry.