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 evolutionary stage. This technique is particularly useful for studying stars similar to our Sun. The oscillations occur due to pressure and gravity waves traveling through a star's interior. Different modes of oscillation provide insights into various layers of a star, allowing astronomers to create detailed models. Asteroseismology has become an essential tool in stellar astrophysics, enhancing our knowledge of the universe.