There Is Actually Sound In Space, Humans Just Can't Hear It

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United States Scott Manley
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Published on ● Video Link: https://www.youtube.com/watch?v=lDzBe0_SLVo


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It's often stated that there is no sound in the vacuum of space, but it's more correct to state that there's no sounds that humans can hear in the vacuum of space, the atmospheric density never goes to zero and so sound waves can still be carried through the vacuum by pressure waves. The ultra low density gas only allows very long wavelengths to propagate, and some astronomical phenomena produce notes so low that they'd be measured in femtohertz.

The video of the Perseus cluster waves comes from the Chandra X-Ray Observatory
https://www.youtube.com/watch?v=c_MfbxLhwEU

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