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NASA records "Earth Chorus"

9:56 AM, Oct 3, 2012   |    comments
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That song you just heard was emitted by the planet Earth.
It was beamed back by a NASA spacecraft.

The sound is called a chorus.

NASA describes that as an electromagnetic phenomenon caused by plasma waves in Earth's radiation belts.

The space agency sent two probes into space in August to learn more about these emissions.  

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