Posts Tagged: "stratosphere"

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Strange Sounds Heard 36km Above Surface of Earth

Strange sounds, whistles and crackles have been heard 36 kilometers (22 miles) above the Earth’s surface “It sounded kind of like ‘The X-files’,” said Daniel Bowman, who constructed the equipment and made the records. This sounds are known as atmospheric infrasound and the frequency is too low (below 20 herthz), so human...