Planetary ice deposits refer to the accumulation of water and other volatiles in the form of ice on celestial bodies such as planets, moons, and asteroids. These deposits are found in various locations throughout the solar system, including polar regions, crater floors, and in underground reservoirs. Understanding the distribution and composition of planetary ice deposits can provide valuable insights into the history and geology of a particular celestial body, as well as the potential for supporting future human exploration and habitation. Research in this area involves remote sensing data, laboratory analyses, and modeling techniques to characterize the properties and origins of ice deposits on different planetary bodies.