Zoltán Kolláth

 

Just as in the air, sound waves can travel in the huge gas spheres of stars. For a certain group of the stars, there exists a generating mechanism by which these vibrations become permanent. This pulsation can be registered from the Earth as a change in light. From the study of changing stars their inner sounds can be reconstructed. The use of seismology or ultrasound in medical diagnostics demonstrates convincingly the theory that we may map the inside of the matter examined if we pick up the waves travelling in it, and based on their characteristics we can form a picture of the medium they travel in. That is why the sounds of stars and the study of the processes in them are so important. The conditions existing in the Sun and stars cannot be recreated in a laboratory on the Earth.