09/12/2024 (Thu) 23:45
No.4678
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>The Best Way to Determine A Star's Age: Asteroseismology'''
https://en.wikipedia.org/wiki/Asteroseismology'''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 local 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.https://youtube.com/watch?v=pfbo4Ffzf9I [Embed]