Orbital evolution is the study of how the orbits of celestial bodies change over time, typically due to gravitational interactions with other bodies in a system. This field of research is important in understanding the stability and dynamics of planetary systems, moons, asteroids, and comets. Orbital evolution can be influenced by factors such as tidal forces, planetary migration, collisions, and perturbations from nearby objects. By studying the orbital evolution of objects in our solar system and beyond, scientists can gain insights into the formation and evolution of planetary systems and the potential for interactions that could affect the trajectories of celestial bodies in the future.