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Does empty space exist

  1. Dec 21, 2013 #1
    Is there in reality empty space where there is no energy or matter? or has anyone seen or detected it?
  2. jcsd
  3. Dec 21, 2013 #2


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    The concept of empty space would require a space devoid of matter, energy, or, more importantly fields. Gravity permeates the entire universe, so, the concept of space without the presence of a gravitational field is invalid.
  4. Dec 23, 2013 #3

    Andrew Mason

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    This is not really a question that science can answer.

  5. Dec 23, 2013 #4


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    Detecting the absence of things is lots harder than detecting the presence of things.

    It's a commonly asked question though. I see it here about once a month. Usually folks ask about regions with no matter, I think because they already get that, as Chronos pointed out, there isn't anywhere without fields.
  6. Dec 23, 2013 #5
    EM radiation permeates space just as well as gravity does. So there is definitely no such thing as space without energy.
  7. Dec 24, 2013 #6


    Staff: Mentor

    The OP has been answered. Now we are just inviting speculation.
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