JD
Lv 5

Sound does not exist in space?

In other words lets use a hypothetical scenario that would be impossible but for sake of argument, lets assume this is possible. An astronaut takes off his helmet and grabs 2 pieces of rock from the moon. He then repeatedly "claps" the respective objects together. Will he hear it?

19 Answers

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  • 2 months ago

    What is "sound"? Sound is a compression wave traveling through a medium (or multiple mediums) and finally reaching your ear drum. In space there is no medium, and therefore no compression wave, and therefore no sound.

  • 2 months ago

    Sound waves exist in space- however because space is a vacuum they don't travel, therefore they wouldn't be able to be perceived.

    • dogsafire
      Lv 7
      2 months agoReport

      no. Sound waves are increases and decreases in the pressure of the medium through which the sound travels. Sound is particle motion. There is no medium in space through which the sound can travel.

  • Joe
    Lv 5
    2 months ago

    No one can hear you scream.

  • 2 months ago

    Sound needs Air to Travel

    It is caused by vibrations through the air, or any medium

    There is no or extremely sparce medium in Space

    No one can hear you F4rt in Space

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  • YKhan
    Lv 7
    2 months ago

    Taking her helmet off is not necessary. You can always build in speakers and microphones on the outside of the helmet, to let sound carry from outside the helmet. But of course, these would have absolutely no effect on the Moon, since there isn't any atmosphere to carry the sound. Though this may work on Mars, or other planets with some atmosphere. However, the sound can carry through the Moon's surface itself, similar to how if you put your ears to the ground on Earth, you can hear sounds even louder that way. Perhaps they could build the microphones & speakers into the boots of the spacesuit, as sound will carry through the Moon's ground.

    On the other hand, you can get a sort of sound wave going through empty space. They are called gravitational waves. But gravitational waves require so much energy that basically you can only hear neutron stars and black holes colliding to make the sound. You couldn't send your own voice through space that way.

  • 2 months ago

    He might 'hear' the vibrations coming through his arms, but he wouldn't hear the sound directly.

  • 2 months ago

    Sound DOES exist in space. Sound is the transmission of vibrations through a medium such as a gas, liquid, or solid. Air, rocks, your body, all act to transmit sound.

    Sound does NOT exist in a vacuum, there is no material to transmit the vibrations.

    Your ears can detect sounds transmitted through the air, and also sounds transmitted through your body.

    • billrussell42
      Lv 7
      2 months agoReport

      true, but that doesn't change my answer. I never said a vacuum can transmit sound.

      "space" is a vague term. Yes, most of it is vacuum, but there are planets, suns, moons, various smaller objects, all of which can transmit sound.

  • 2 months ago

    No, because she'll be unconscious and in fact she'll probably never hear anything again because of ear damage from the explosive decompression.

  • 2 months ago

    It's possible that he will hear it because when he hits the rocks together it will cause a vibration that travels through his bones that he will be able to pick up in his ears. But if there is no gas to transmit sound waves there's no sound to the human ear. It doesn't have to be breathable air it has to be some kind of gas. There is not much of any kind of gas on the moon. Do you understand what would happen if there was air or gas in space? Everybody on the planet Earth and all through our solar system would be dead in a matter of hours! The sound and the shockwave from our nearest son would kill everybody and everything! The deafening roar of millions of hydrogen bombs and the shockwave would strike us and that would be the end of us.

  • 2 months ago

    Directly no but he need not take his helmet off as smack the rocks together will transmit the vibration through the body and space suit and the ears will detect it

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