If you like thinking about Planet and Space Sounds, here is some info. on NASA's Audio Development Laboratory
How we communicate in space
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Voyager Audio Files- Space Sounds NASA
ENJOY THE SKIE FOR MILES AND MILES. WE ARE ONE FAMILY ON THIS EARTH. ALAN SHEPARD PROJECT
Song of Earth
What Are Planet Sounds?
Technically, Sound is defined as a hearable noise. In Space sound is in the form of electromagnetic vibrations that pulsate in wavelengths. Click this for more on NASA's Advancements in detecting space sounds:
Most cosmic objects emit frequencies that are higher than our ears can hear. Click this to learn about how radio waves help us in Astronomy: Planets emit radiation which can be used to make sounds that we hear. The Voyager 2 Planet Sound Recordings are electromagnetic frequency and particle osscilation frequencies that NASA converted into sound waves that we can listen to and enjoy.
Here is an article on: Sources of Radio Waves in the Universe: