planetary motion

Translations
движение планет
Kepler's laws describe planetary motion.
Законы Кеплера описывают движение планет.
Definitions
Planetary motion refers to the movement of planets in their orbits around a star, such as the Earth orbiting the Sun. This motion is governed by gravitational forces and can be described by laws of physics, particularly Kepler's laws of planetary motion and Newton's law of universal gravitation.
Words
motion

noun
движение
planetary

adjective
планетарный