Asteroid hydration is a research area that focuses on studying the presence and distribution of water within asteroids. Water is believed to be abundant in asteroids, either in the form of hydrated minerals or as ice trapped within the asteroid's structure. Understanding the hydration levels of asteroids can provide valuable insights into the history and composition of these celestial bodies, as well as their potential as resources for future space exploration missions. Researchers use various techniques, such as spectroscopy and remote sensing, to study asteroid hydration levels and gain a better understanding of the role of water in shaping the evolution of asteroids.