Sounds of Space: Signals Turned Into Audio

Measurements from space can be translated into sounds we can hear. Although space is a virtual vacuum, this does not mean there is no sound in space. Electromagnetic measurements can be converted into audio; they are not themselves acoustic sound traveling through a vacuum and can be detected using specially designed instruments developed by NASA.


These amazing ambient space sounds come from electronic vibrations of the planets, moons and rings, electromagnetic fields of the planets and moons, planetary magnetosphere, trapped radio waves bouncing between the planet and the inner surface of its atmosphere, charged particle interactions of the planet, its moons and the solar wind, and from charged particle emissions from the rings of certain planets.

Looking into outer space, we often assume it would be absolutely silent. Little do we realize that the recordings can translate selected measurements into an audible form. The resulting audio can reveal striking patterns in the selected measurements. Enjoy!

(The video originally embedded here is no longer available on YouTube.)

Source: Spirit Science and Metaphysics

An audible pattern can represent a different kind of measurement

Space audio can make changes in recorded data easier to notice over time. A pitch, rhythm or volume may correspond to a quantity that an instrument measured, rather than to a pressure wave a microphone heard. The conversion is therefore part of the explanation: it tells the listener what a rising or falling sound represents. Comparing that description with the audio makes the experience more informative than giving every celestial body an unexplained musical voice.

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Ask what was converted into sound

A space recording may translate measured signals into an audible range rather than capture music traveling through empty space to a microphone. The instrument, original measurement and conversion method determine what you hear. That makes the audio an interpretation of data worth exploring. A pleasing soundtrack alone does not establish that a planet literally produces the same sound for a nearby listener.

Explore the related article: The White Bellbird: Understanding a Record-Breaking Call.

Additional source: NASA: how data sonification translates measurements into audio.