Stellar pulsations refer to the periodic variations in brightness or size of a star, which are caused by changes in its internal structure and processes. This phenomenon provides valuable information about the physical properties of stars, such as their mass, temperature, and composition. Studying stellar pulsations can also help astronomers better understand the evolution and lifecycle of stars, as well as their role in the formation and structure of galaxies. By analyzing the patterns and frequencies of these pulsations, researchers can gain insights into the dynamics and properties of stars across different stages of their life cycles.