Why does the universe exist?

Discussion in 'Science' started by Patricio Da Silva, Jan 4, 2022.

  1. Montegriffo

    Montegriffo Well-Known Member

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    ...and the usefulness of the easily led is the empty space between their ears.
     
  2. WillReadmore

    WillReadmore Well-Known Member

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    So far, warping space as a method of fast travel is total scifi.

    I know there is a guy who proposed that. I could find his name. But, the list of problems with his idea is serious.

    The vast majority of theoretical physicists are working on theories of how this universe works, including what I'll call "beyond" our universe.

    So, we have people working on a number of the various string theories, people like Dr. Carroll working on how this universe may be based on a wave function (since he sees string theory as merely a small step toward the fundamental without it showing any basis for what would actually be fundamental), and other various directions, some quite serious, others more speculative, but perhaps requiring investigation at least as due diligence in the field.

    Suggesting that theoretical physicists are trying to figure out how to travel fast is just not a realistic understanding of what they do.
     
  3. WillReadmore

    WillReadmore Well-Known Member

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    There are models where this universe is infinite and models where this universe is not infinite.
     
  4. WillReadmore

    WillReadmore Well-Known Member

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    What has been detected is that vacuum has energy.

    So, for example, when this universe expands (as it is known to do) vacuum energy also expands. That is, the energy density of the universe stays the same - we have just as much energy per unit volume.

    The notion of space as "nothing" isn't actually true, according to what physicists say.
     
  5. Patricio Da Silva

    Patricio Da Silva Well-Known Member Past Donor

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    And both models exist in the abstract, where, when applied to the concrete, come to two opposing conclusions.

    However, the models, including infinity, still reside in the abstract.

    The question then becomes, when the universe disappears, does the abstract still exist?

    I say it does, but I can't prove it. I say it does because I once had an OOBE.
     
    Last edited: Jan 9, 2022
  6. Patricio Da Silva

    Patricio Da Silva Well-Known Member Past Donor

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    Yes, that does make sense, there is no absolute vacuum, there is energy in the vacuum. The question is, how to tap it for our benefit. Some say it is the key to zero point energy ( which I know hasn't been proven yet).

    https://www.newscientist.com/articl...e-where-does-the-zero-point-energy-came-from/

    (Yes, I'm aware of the controversial nature of New Scientist, but it can be sourced, though it has erred egregiously, on occasion,
    I would put the magazine as 'conversational science' rather than hard science)
     
  7. tecoyah

    tecoyah Well-Known Member Past Donor

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    That force already exists....Dark matter may kick in just as dark energy did. We also know verry little about the true nature of magnetism on cosmic scales.
     
  8. tecoyah

    tecoyah Well-Known Member Past Donor

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    As likely as any other hypothesis in this.
     
  9. dairyair

    dairyair Well-Known Member

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    Aren't thoughts and emotions chemical, electrical, and perhaps some other physical occurrences insides one's body or brain?
     
    Last edited: Jan 9, 2022
  10. Patricio Da Silva

    Patricio Da Silva Well-Known Member Past Donor

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    I say consciousness exists outside of the concrete universe.
     
  11. WillReadmore

    WillReadmore Well-Known Member

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    We know a lot about dark matter. Of course it doesn't include exactly what it is made of! But, astrophysicists know how it aggregates, that it is sensitive to gravitation, and some other things. They know approximately how much there is around our galaxy and other galaxies. They know it isn't the root of dark energy.

    I'd be surprised if dark matter is going to present us with a new force. Surely we would detect that force as a reaction to the dark matter mass that is known.

    I'm not sure what you mean by the magnetism aspect. Magnetism doesn't really have a long reaching effect capability, does it?
     
  12. politicalcenter

    politicalcenter Well-Known Member

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    Are you insulting me. If so....
     
  13. politicalcenter

    politicalcenter Well-Known Member

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    Yes, but that does not make them less real.
     
  14. politicalcenter

    politicalcenter Well-Known Member

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    I have often wondered about that.
     
  15. WillReadmore

    WillReadmore Well-Known Member

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    Yes! For me, it's one of those things about the way this universe works that is both measurable and really surprising/weird.
     
  16. WillReadmore

    WillReadmore Well-Known Member

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    Please be aware that there is absolutely NO evidence of that.
     
  17. Montegriffo

    Montegriffo Well-Known Member

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    Not at all.
    I was insulting the easily led.
     
  18. politicalcenter

    politicalcenter Well-Known Member

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    Cool...
     
  19. dairyair

    dairyair Well-Known Member

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    Of course not. My statement meant those things are physical.
    So theoretically, physics could be applied.
     
  20. kazenatsu

    kazenatsu Well-Known Member Past Donor

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    Scientists do not know for sure, and any theories to try to answer the question would be at the very fringes of established science.

    The current mainstream view is that both time and space were very compressed at the time. Most scientists tend to assume it was a point by working the logic of the phenomena backwards as far as possible. Of course we don't even know exactly what space did look like in that compressed state, just like we don't know exactly what space looks like in the universe today. There of course a few of the most likely possible theories.

    I will ignore all the details of the physics (both because it is overly complicated and I do not feel it is really very relevant to your question) and focus on the biggest simplest issue, which is how did everything get into that state it was in, or where did it ultimately come from.

    Usually these sorts of physics assumes a symmetry between space and time, so nothing happens in time that does not also happen in space. So that is something else bizarre to think about that might help give some insight. It suggests that if the universe had a "start" then space has a start too (perhaps outside the visible universe). Or maybe time does not have an actual beginning, and either goes on infinitely forever, or circles back on itself. But even this we do not know for certain.

    Current science does not know of any phenomena that can make matter and energy out of nothing.
     
  21. Patricio Da Silva

    Patricio Da Silva Well-Known Member Past Donor

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    And did I not say so?
     
  22. Patricio Da Silva

    Patricio Da Silva Well-Known Member Past Donor

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    I thought science proved that there is no such thing as 'nothing', even the vacuum in space has energy in it?

    @WillReadmore
     
    Last edited: Jan 10, 2022
  23. Pixie

    Pixie Well-Known Member

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    Curiouser and curiouser, said Alice!!
    Interesting thought.
     
  24. Pixie

    Pixie Well-Known Member

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    If infinity did not exist, there would have been time and space before and after it, so I agree that in all probability it does exist.
    But then you get quickly into "where did it all come from" which makes a lie out of infinity.
     
  25. tecoyah

    tecoyah Well-Known Member Past Donor

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    Quantum particles regularly and spontaneously appear and annihilate out of "Nothing".
     
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