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Why can't sound be heard in space?

User Ddsultan
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space is a void full of planet's and stars. there is nothing for sound waves to travel through or bounce off of.
User Sergey Shafiev
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There is nothing for the sound waves to pass through. Sound only passes through something with a atmosphere (like earth), but space is purely a vacuum with no particles for the sound waves to pass through.
User Ashish Kumar Verma
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