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Re:NASA Actually Recorded Sound in Space, and It’s Absolutel... by drdeca on Friday June 26, 2015 @03:17PM (#9787085)
...

records " electromagnetic vibrations" ?

So,

Light?

Not sure why it makes sense to deem this "recording sound".

producing sound based off a recording, or interpreting a recording as sound, sure.

But recording sound?

Re:NASA Actually Recorded Sound in Space, and It’s Absolutel... by cartoonfoxes on Friday June 26, 2015 @03:33PM (#9787206)
"Sound" in the sense that the wavelengths are comparable to the audible spectrum.