Mysterious Space Noises Picked Up By A NASA Student Balloon Experiment

Sounds that were recorded on August 9, 2014 from the edge of space are special for a few reasons. First of all, no one knows the source. Second, it was the first time infrasounds had been captured from the edge of space in 50 years. On that August day in 2014, a balloon that was created by a university student for a NASA experiment traveled up to the edge of the stratosphere and picked up strange noises roughly 22 miles (36 kilometers) above Earth's surface. The balloon was designed and built by Daniel Bowman, a graduate student at the University of North Carolina at Chapel Hill.