Our planet is a natural source of radio emissions, which surround us all the time.
Radio waves propagate in the Earth's atmosphere, ionosphere and magnetosphere, and cannot be heard by humans since they are electromagnetic waves.
When we convert them to sound waves they can be detected by our ears. The way these waves sound, when played through an audio system, defines their name: sferics, tweeks, whistlers, chorus, and hiss. We also call them "Earth Songs".
We used the "Earth Songs" as the primary material for the music composition "Sonic Landscapes #1".
Time lapse sequences of photographs taken by the crew of expeditions 28 & 29 onboard the International Space Station from August to October,2011.
Part of the video taken from vimeo.com/32001208 by Michael König