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Listen: ‘Alien sounds’ recorded 22 miles above the earth

Leon Siciliano
London Telegraph [1]
May 5, 2015

Mysterious hisses and whistles have been recorded 22 miles above the earth’s surface using infrared microphones aboard a Nasa student balloon experiment.

The ‘infrasounds’ were captured by Daniel Bowman, a student at the University of North Carolina, according to a report in LiveScience.

Full article here [1]