Planetary motion is the study of the movement of natural celestial bodies, such as planets, moons, asteroids, and comets, in their orbits around a central gravitational force, typically a star like the sun. This field of study encompasses a wide range of topics, including Kepler's laws of planetary motion, gravitational interactions between celestial bodies, and the formation and evolution of planetary systems. Researchers in this area analyze the trajectories, velocities, and accelerations of celestial bodies to better understand their behavior and predict their future movements. The study of planetary motion has important implications for astronomy, astrophysics, and space exploration.