Lunar evolution is the study of the processes that have shaped the Moon over billions of years. This includes the formation of the Moon, its early history, and the geological, surface and atmospheric changes that have occurred over time. Researchers use a combination of geological, geophysical and geochemical techniques to understand the evolution of the Moon and its relationship to the Earth. Studies of lunar evolution can provide insights into the early history of the solar system, the formation of planetary bodies, and the interactions between the Earth and the Moon.