Listen: ‘Alien sounds’ recorded 22 miles above the earth Prison Planet.com Posted on May 5, 2015 Posted in Aggregated No Comments Tagged with Sci Tech London Telegraph | Nasa still cannot explain the eerie hisses and whistles recorded by special microphones 22 miles above the earth’s surface. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email