Mysterious 'X-Files' noises captured 22 miles above Earth's surface

For the first time in 50 years, mysterious 'X-Files' sounds have been recorded from the edge of space. A helium balloon built by a student for a NASA project captured the eerie hisses and whistles 22 miles above the Earth's surface.

The bizarre noises were captured using equipment designed and built by Daniel Bowman, a graduate student at the University of North Carolina at Chapel Hill, according to LiveScience.

The instruments recorded atmospheric infrasound – sound waves at frequencies below 20 hertz. Since infrasound is below human hearing range, the noises can only be heard when the recording is sped up.

"It sounds kind of like 'The X-Files,'" Bowman said. He added that the intensity of the sounds came as a shock, stating that he was “surprised by the sheer complexity of the signal.”

Source: http://rt.com/news/255725-space-noises-nasa-recording/