Orbital mechanics is a term used to describe the study of how objects move and interact in space. There are several synonyms for this term that can be used to describe this field of study. For example, astrodynamics is another term that is often used to describe the study of orbital mechanics, as it focuses on the dynamics of celestial objects in space. Celestial mechanics is another synonym that is related to this field, as it focuses on the mathematical equations and principles that govern the movement of objects in space. Aerospace engineering is yet another synonym, as it involves the design and development of spacecraft and other vehicles that use orbital mechanics.