How sound travels in space?

For sound waves to travel, there is a requirement of the medium so that the vibration of the medium will carry the sound waves. Few years ago it was thought that there was no air in the space which was later found that is not true. Space is not a complete void but it has gas and dust particles left behind either by the old stars or that are used for the formation of the new stars.

  • The distance between these dust particles is so much that the sound ripples cannot reach out to each other resulting in sound waves with a low frequency which is beyond human hearing.
  • Therefore, it can be concluded that sound can travel through space but cannot be heard by human ears as the frequency is very low.

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