Hearing in Space

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Everyone knows that, in space, no one can hear you scream. Sound is a wave that requires a medium to travel through, and if space is empty, there’s no medium to carry that sound. Except, as Mike from The Point Studios explains, empty is a relative term. Space is full of dust and gas and plasma, just not as full of that matter as we’re used to. Thus, the question of whether sound can travel through space turns into a matter of scale. If the scale–the wavelength–of a sound is much larger than the distance between molecules, then the sound can propagate. So there CAN be sound in space – it just has to have a very long wavelength and, thus, a very low frequency. Check out the video for the full story! (Video credit: The Point Studios)

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