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".
The sounds used were provided by the NASA Inspire Project and the University of
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
A NASA spacecraft has recorded eerie-sounding radio emissions coming from our own planet. These beautiful "songs of Earth" could, ironically, be responsible for the proliferation of deadly electrons in the Van Allen Belts.
Glowing electric-blue at the edge of space, noctilucent clouds have surprised researchers by appearing early this year. The unexpected apparition hints at a change in the "teleconnections" of Earth's atmosphere.