The space nerd in me loves stories like this.
According to new data collected by NASA, fast-moving charged particles are trapped in magnetic areas around the planet known as the Van Allen radiation belts that extend up to about 6,000 kilometres above the surface. Basically, these belts operate as a shield against harmful rays and particles from reaching us.
This action produces fluctuations in the belts called “chorus waves” as electrons are shot through our atmosphere. One of the byproducts is the Northern (and Southern) Lights. Another is this sound.
Someone needs to sample this for something. Get on it, will you?
More at Space.com.