Asteroseismology is the study of oscillations in stars, which helps scientists understand their internal structures and processes. By observing the light variations caused by these oscillations, researchers can infer details about a star's age, composition, and evolution. This technique is similar to how seismologists study earthquakes to learn about Earth's interior. The field has gained significant attention with the advent of space missions like Kepler and TESS, which have provided high-precision data on stellar brightness. Asteroseismology not only enhances our knowledge of individual stars but also contributes to our understanding of stellar populations and the formation of galaxies.