It’s all about that bass with our atmosphere. Called “infrasounds,” they can be heard in the stratosphere about 22 miles up. Well, actually, they can’t be heard because the bass is so low–around 20 Hz and below. NASA recorded these sounds using microphones attached to a helium balloon. The recordings were then sped up 1000 times so we could hear them. Listen. Take THAT, Meghan Trainor!
More at the Huffington Post.