Planetary materials refer to the rocks, minerals, and other substances found on planets, moons, and other celestial bodies within our solar system and beyond. This field of research involves studying the composition, structure, and physical properties of these materials to understand the geology and formation processes of different planetary bodies. Scientists analyze samples collected from space missions, meteorites, and remote sensing data to gain insights into the history and evolution of planets and their geologic features. Understanding planetary materials is essential for interpreting planetary processes, determining the potential for life on other worlds, and informing future exploration missions to these celestial bodies.