Earth - The Whale

[Gavin Hannah]

EARTHSONG: A NASA spacecraft has recorded audio-frequency radio emissions coming from Earth. Some say the signals sound like whales; others liken them to the chirping of prairie dogs. What do you think? [audio] [

] [full story

Please give the audio a listen, it's awesome.

http://www.spaceweather.com

[Styx]

Defiently a bit of whale in there with cricket chirps in the background.

[Gowon]

Fascinating stuf... Maybe that's how planets communicate with each other?

[Methuselah]

EARTHSONG: A NASA spacecraft has recorded audio-frequency radio emissions coming from Earth. Some say the signals sound like whales; others liken them to the chirping of prairie dogs. What do you think? [audio] [

] [full story

Please give the audio a listen, it's awesome.

http://www.spaceweather.com

How can 'audio-frequency' signals travel through a vacuum? That said, there are myriad sources of electromagnetic 'noise' one could think of...

[frogesque]

Article makes it clear this is electro-magnetic radiation between 0 and 10kHz that has been digitally sampled and converted to an audio signal.

Sounds like every radio I ever tuned into Radio Luxembourg - not sure if that was just the early pop music or meandering signals from near space!

[Gavin Hannah]

You could almost picture Captain James T Kirk squinting in confusement as this is played on the Bridge of the USS Enterprise. Turning to Spock for answers, all he gets is.."Fascinating.!"