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Can there be anything outside of our Existance?

  1. Sep 19, 2005 #1
    We exist in the universe, with space and time.

    Without space and time, there would be no motion.

    If there is no space and time outside of the limits of the WHOLE(not just visible) universe, is it possible to have anything existant outside of the universe?

    If nothing can exist outside of the universe, does that mean there is nothing outside?

    Implication of last question: Is there an outside, or is our universe infinite/looped? Because how can anything be existant when there is no time to start it?
  2. jcsd
  3. Sep 19, 2005 #2
    By definition, nothing can be outside of existance because it doesn't exist.
  4. Sep 19, 2005 #3
    So the universe would be everywhere/infinite/looped... right?
  5. Sep 19, 2005 #4
    The universe is, by definition, everything that exists. So there isn't anything outside of it, by definition. Wether it loops or is infinite is not presently known.
  6. Sep 20, 2005 #5


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    Proposing a definition for the term 'universe' is the foremost challenge.
  7. Sep 20, 2005 #6
    So what would the definition of the outside of existance be? x.x

    EDIT: You mean OUR existance, right?

    so now it's just a choice of finding out if the universe loops or not?

    And if we were to leave existance, wouldn't existance be everywhere?
    Last edited: Sep 20, 2005
  8. Sep 20, 2005 #7
    You can't go outside of existance because anywhere you could possibly BE is part of existance, by definition. You could call it nothingness, I suppose, seeing how you can't say anything about it, in other words it has no characteristics.

    Your sentence doesn't make sense. Also, existance IS everywhere, by definition.

    Look, I don't know what you're trying to get at here. You can't learn or develop anything by just playing around with words.

    Also, I think this thread should be moved to metaphysics.
  9. Sep 20, 2005 #8
    are we talking about fundamentals? or just concepts.
  10. Sep 20, 2005 #9
    concept of leaving the universe.

    If the universe IS all of existance, then there is no outside.

    So therefore, the universe is everything, which means that its size cannot be limited, or there would be a border between everything and nothing.

    How could you have a nothingness border? x.x

    And yes, maybe I did post this in the wrong area.
  11. Sep 20, 2005 #10
    the definition of universe was once 'all existence' but since about 30-40 years ago the word means 'observable space/time' and the notion of universes within a multiverse has become the standard meaning

    it's rather a simplistic view- there are to many existential/ontological hierarchies to pin down the term 'universe'-

    you have:

    -hubble volume contained within the
    -whole of 4D spacetime which is one state/history of the
    -Hilbert Space for 4D spacetimes [or a classical multiverse/landscape] which is an infinitessimal portion of the
    -infinite dimensional phase space of possible physical systems [Existence]

    Universe can be used to describe any of these- and often is without the user explaining which definition they are using!
    Last edited: Sep 20, 2005
  12. Sep 20, 2005 #11
    No. It can loop or just have a normal boundry. For example, the universe expands faster than the speed of light, so therefore it has a boundry but you can never reach it.
  13. Mar 4, 2008 #12
    all your theories seem possible i believe yall should come together as one and root out every possibility and find the most logical resonable answer on how the universe runs and time itself, truthfully i see our world earth as just a sorta antfarm,human beings are bored thats why therefore they create and live,where more of a creature who struggles to reach perfection before death takes us, after all we are born to die,the universe itself may be one of many universes for all we know,appart of something to a greater equation.
  14. Mar 4, 2008 #13
    heres another theroy about nothing you cannot break matter into notting, for example take a black hole that sucks up a few planets at once where would that matter go to? i believe it just reduces it into atoms that cannot be seen,and therefore the atoms once broken apart drift around to build up and create bigger parts of matter such as stars planets and such i believe blackholes are a natural way of restoring and creating new galaxies sorta like natures vaccume,but this is one of my questions even i dont know about why do these black holes expand as more matter is sucked into them if one of yall know could yall please tell me.
  15. Mar 5, 2008 #14


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    I don't understand the relevance of your example, especially because nothing travels faster than the speed of light.
  16. Mar 5, 2008 #15


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    Check the dates DM, Entropy posted that in 2005. There is a reason threadcromancy is generally frowned upon!
  17. Mar 11, 2008 #16
    This question can be best answered by a quote from Hawking, who said that such a question is like asking what's north of the north pole. It doesn't make any sense.
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