The Singing Sun

Have you ever "heard" the sun singing? According to Kenneth R. Lang, the sun sings. "The Sun is playing a secret melody, hidden inside itself, that produces a widespread throbbing motion of its surface. The sounds are coursing through the Sun's interior, causing the entire globe, or parts of it, to move in and out, slowly and rhythmically like the regular rise and fall of tides in a bay or of a beating heart."  Evidently, the sun's sound waves are normally at frequencies too low for the human ear to hear and the human brain to decode. To be able to hear the sun's sound waves, the scientists sped up the waves 42,000 times and compressed 40 days of vibrations into a few seconds. So, thanks to Stanford University, it is now possible to hear the sun singing. (http://solar-center.stanford.edu/singing/)