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  Space: How does Earth sound from space?
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16th Nov 2012, 8:06 AM
A NASA spacecraft recorded one of the clearest sounds of the Earth ever recorded. Craig Kletzing of the University Iowa explain that the Earthsong is called chorus.

Chorus is an electromagnetic phenomenon caused by charged particles or so called plasma waves in the radiation belts of Earth. The sounds you are about to hear are not the usual acoustic wave sounds like music that travels to the radio trough the air on our planet. Chorus is made of radio waves that variate evenly at acoustic frequencies between 0 and 10 kHz and the radiation bet storm probes detect these waves. But enough of the talk, let's hear the sounds of Earth as heard from space and a bit of further explanation of the phenomenon watch the video.

To find out more about the 'Earthsong' go here: http://goo.gl/s3LCv

changed: mat (17th Nov 2012, 11:30 AM)
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