Stellar occultations are astronomical events in which a celestial object, such as a planet or moon, passes in front of a star, blocking its light and causing it to temporarily disappear. This phenomenon can provide valuable information about the size, shape, and composition of the object passing in front of the star. By observing the changes in the star's brightness during the occultation, astronomers can learn more about the object's atmosphere, surface features, and orbital characteristics. Stellar occultations are used in a variety of research areas, including planetary science, asteroid studies, and exoplanet research.