Surrounding our planet are rings of plasma, part of Earth’s magnetosphere, which are pulsing with radio waves. These aren’t audible to the human ear, but radio dishes and antennas always pick them up. Recently, NASA scientists recorded some of the Earth’s pulses and transformed them into acoustic waves – the end result is a short song chanted by our very planet.
Dubbed “Chorus”, the song is made of radio waves that oscillate at acoustic frequencies, between 0 and 10 kHz. Actually, similar sounds are often picked up by ham radio operators on Earth
Source: ZME Science. Read full article. (link)