This is a sample from the first US orbital spacecraft, Explorer 1, which carried an instrument designed and built by Professor J. A. Van Allen's research group at The University of Iowa.  You are hearing the voice-annotated recording of the encoded data signal as received on the ground.

Explorer I, Reel 2146, March 6, 1958

This is a slowly developing experiment to upload massive amounts of plasma wave space audio so that the public can select "interesting" examples to develop for outreach.

I'm one guy doing this in my spare time.  If anyone would like to "gift" me a one year pro account, I'd be really grateful.

Explorer I, Reel 2146, March 6, 1958

_SPACE_audio