2003-02-24 04:00:00 PDT Denver-- In rumbling tones far lower than the sounds that human ears can hear, a symphony of mysterious noises constantly assails the entire globe, and scientists are learning ...
Eerie sounds from the edge of space were recorded for the first time in 50 years aboard a NASA student balloon experiment. Infrasound microphones captured the mysterious hisses and whistles 22 miles ...
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