Planetary geology, also known as exogeology, is the study of the physical features and processes of celestial bodies such as planets, moons, asteroids, and comets. This field of study focuses on the formation, evolution, and surface features of these bodies through the use of remote sensing, spacecraft missions, and laboratory analysis. Other synonyms for planetary geology include astrogeology, space geology, extraterrestrial geology, and planetary science. These terms all essentially refer to the study of the geologic processes that occur on celestial bodies beyond Earth. Understanding these processes can provide crucial insight into the history and potential habitability of other planets and moons in our solar system and beyond.