Cometary evolution is the study of how comets change over time as they journey through the solar system. This includes examining their physical and chemical composition, as well as observing how they interact with the Sun, planets, and other celestial bodies. Scientists study cometary evolution to better understand the history and formation of our solar system, as comets are considered some of the most primitive objects in our solar system and may contain clues about its early development. Additionally, understanding cometary evolution can help researchers predict the behavior of comets and their potential impact on Earth.