Back Asteroseismologie Afrikaans علم الزلازل النجمي Arabic Astrosismologia Catalan Hvězdná seismologie Czech Asteroseismologie German Αστεροσεισμολογία Greek Astrosismología Spanish اخترلرزهشناسی Persian Asteroseismologia Finnish Astérosismologie French
Asteroseismology is the study of oscillations in stars. Stars have many resonant modes and frequencies, and the path of sound waves passing through a star depends on the speed of sound, which in turn depends on local temperature and chemical composition. Because the resulting oscillation modes are sensitive to different parts of the star, they inform astronomers about the internal structure of the star, which is otherwise not directly possible from overall properties like brightness and surface temperature.
Asteroseismology is closely related to helioseismology, the study of stellar pulsation specifically in the Sun. Though both are based on the same underlying physics, more and qualitatively different information is available for the Sun because its surface can be resolved.