Why the universe has to be so big?

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Saint, Oct 29, 2017.

  1. RajeshTrivedi Valued Senior Member

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    In the above post #60.

    Pt#1 has similarity with Asymptotic Freedom, so has accepted science behind.
    Pt#3 is like General Relativity, the warping of spacetime by mass/energy/momentum. So has precedent.
    Pt#2 is new, it associates gravity with stretching of PSMR and makes G variable, highest between quark quark bond and zero when the PSMR is at rest.

    In present models G is taken as universal constant, to me it appears disturbing, "the gravity is caused by the presence of mass but G is constant". Where does G come from then? This suggest that mass is interacting with the unknown which causes G, a kind of incompleteness of theory.

    But in PSMR model, the G itself emerges depending on the stretch magnitude.
     
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  3. James R Just this guy, you know? Staff Member

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    Saint:

    It's a bit hard to answer your questions unless you can be more specific.

    It depends on what kind of reason you're asking about.

    I mean, we have have a good idea of how it got so big following a small beginning, but maybe you're looking for some kind of "ultimate" cause.

    It depends on what you're referring to when you talk about "chance".

    The laws of physics are not generally regarded as making things happen "by chance". But, again, maybe you're looking for some kind of ultimate cause of the laws themselves.

    Our cosmological models can certainly give reasons for the expansion of the universe. But I'm still not sure what kind of reason you're interested in.
     
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  5. Saint Valued Senior Member

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    If it is not happening by chance, why no lives in other planets?
     
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  7. DaveC426913 Valued Senior Member

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    Not sure what the size of the universe has to do with who's living on other planets...

    We don't know if there is anyone living on other planets. There could be millions of civilizations across the galaxy for all we know.
     
  8. Saint Valued Senior Member

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    if the law of physics/biology/chemistry is the same everywhere, then it has to be the same type of life as us to exist in this universe.
     
  9. DaveC426913 Valued Senior Member

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    Not really. Even here in Earth, if we wound the clock back 500 million years, the flora and fauna today would look nothing like what we have.

    There are (likely) as many ways of evolving complex life as there are planetary environments out there.

    Although I do agree there are some fundamentals: namely H2O, followed by C, O and H.
     
  10. James R Just this guy, you know? Staff Member

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    We don't know if there is life on other planets yet. My guess is that it won't be too long before we find some. We have quite a few interesting places to look right here in our own solar system.

    What do you mean by the "same type"? What do you expect to be the same, exactly? I mean, if you compare an oak tree and a human being and a shark, they all look superficially different, yet they all share a common ancestor.
     
  11. Gawdzilla Sama Registered Senior Member

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    How do you know there is no life on other planets?
     
  12. Gawdzilla Sama Registered Senior Member

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    Life can be based on silicon rather than carbon, but the same rules do apply, yes.
     
  13. Gawdzilla Sama Registered Senior Member

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    And there are many, many galaxies.
     
  14. Saint Valued Senior Member

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    i believe there are no other intelligent beings out there, except angles and GOD.
    only the Earth got human beings.
     
  15. DaveC426913 Valued Senior Member

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    Couple of problems here.

    1] It's OK to believe whatever you want, but do you have a rationale for believing it?
    2] Odd that you would find angels (sp.) and God more plausible than other intelligent beings. This reinforces the concern expressed in point 1.
    3] By definition, only Earth has human beings. What does that have to do with intelligent life elsewhere? You weren't expecting to encounter Earthlings out there were you?
     
  16. river Valued Senior Member

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    Yeah but , what of other planet beings ?
     
  17. river Valued Senior Member

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    why-the-universe-has-to-be-so-big. That is the OP question .

    Answer ; because each sub-atomic needs a fundamental amount of space inwhich to exist . Which of course expands into atomics.

    Therefore the reason the Universe is so big , is because energy and then matter , has a fundamental amount of space that is needed in order for both to manifest into a physical thing .

    Space is important for the manifestation of anything . No matter the size .

    From my post # 42 .
     
  18. river Valued Senior Member

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    Further from my above post # 42 .

    The Universe is creating energy and matter at every moment , all the time .

    The Universe is not a still thing . The Universe grows , everywhere , all the time .
     
  19. paddoboy Valued Senior Member

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    If that were the case, we would see some galaxies near the edge of the observable universe blue shifted...we don't of course. And if we assume that this is because contraction has not as yet started, then that would not falsify the BBT which applies to the observable universe, but rather extend outside the BB parameter to encompass a Oscillating universe.

    Please Register or Log in to view the hidden image!

    As you well know, if any evidence surfaced showing the BB to be false, (remember it applies to the observable universe) then it would replace the BB. That's how science works...certainly not by wishful thinking, and hoping, and obfuscating due to some personal agenda that the BB is incorrect based on some alternative nonsense that fails anyway to match the four main pillars which the BB does already.
    Even a future QGT will in all likelyhood encompass the BB while extending the parameters and eliminating the singularity, or more then likely pushing it further back.
     
  20. paddoboy Valued Senior Member

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    Why? There are billions and billions of galaxies out there, and each galaxy contains hundreds of thousands, hundreds of millions and even billions of stars. Couple that with the fact that the stuff of life is everywhere we look and one needs to be rather naive, (or have a religious agenda) to believe we are it.
    Let me add that while we most probably are not alone, we as yet have no evidence for any ETL.
     
  21. paddoboy Valued Senior Member

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    Energy is neither created nor destroyed but simply changes state. The sum of the matter/energy in the universe remains constant.
    The universe/space/time is certainly dynamic and expanding, in fact accelerating in that expansion rate.
     
  22. Q-reeus Valued Senior Member

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    Short memory again paddoboy?: http://www.sciforums.com/posts/3431221/
    Try not to embarrass yourself too often this time around - ok?
     
  23. paddoboy Valued Senior Member

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    I'm not embarrassed. Perhaps you stand in front of a mirror or perhaps just infatuated with me? I sometimes have that effect on people. You take it easy, OK?
     

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