Why the universe has to be so big?

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

  1. timojin Valued Senior Member

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    Hang around some latest study are questioning our constants and light is one of them.
     
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  3. StrangerInAStrangeLand SubQuantum Mechanic Valued Senior Member

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    Why is the universe so small?

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  5. Michael 345 Valued Senior Member

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    Not finished with the renovations yet

    Work in progress

    I've been looking at a few of those studies thanks and if you have any links they would be welcome

    Cheers

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  7. StrangerInAStrangeLand SubQuantum Mechanic Valued Senior Member

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    ^^^
    Any thing's speed is constant unless something affects it & makes it different.

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  8. Michael 345 Valued Senior Member

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    I appreciate that and agree in so much as when light passes through a transparent medium it slows and one lab managed to bring light to a standstill

    It's the c² part when light is at its full speed in a vacuum etc etc and its value plays a part in conversation of mass into energy which I understand makes it critical to be the speed it is otherwise you either end up with extra energy being extracted from the mass or not enough

    It's as bad as a clock "ticking" faster at the top of a tall building than one one the ground floor. Why does the top floor not move into the future and what stops the ground floor slipping into the past?

    Never mind why is the Universe so big/small. Why is it so weird?

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  9. StrangerInAStrangeLand SubQuantum Mechanic Valued Senior Member

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    ^^^
    Compared to what?

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  10. Michael 345 Valued Senior Member

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    Me

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    the paragon of normal

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  11. Gawdzilla Sama Registered Senior Member

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    I no doubt got the discipline wrong.
     
  12. Seattle Valued Senior Member

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    Yes, it's not science. It's religion or philosophy.
     
  13. hansda Valued Senior Member

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    The universe is expanding and aging. So it is growing. Though total energy is conserved.

    Thats due to the dynamics of the universe.

    Perhaps life is possible in the earth only.
     
  14. geordief Registered Senior Member

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    (my bold) So at T=10^-43 Secs (hope that is right) there was as much energy in that (to us) small space as there is now in the observable and unobservable universe that developed from it.

    Would that be a correct interpretation?

    Are there any figures that have attempted to quantify those energy levels?
     
  15. StrangerInAStrangeLand SubQuantum Mechanic Valued Senior Member

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    ^^^
    What do you mean by unobservable universe that developed from it?

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  16. Saint Valued Senior Member

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    Why must we believe there is alien somewhere out there?
     
  17. Michael 345 Valued Senior Member

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    Well there is no must about it

    Nobody knows and people form their opinions from the numbers

    I look at life, look at conditions around the Universe, look at how many of those conditions appear in how many trillions of regions and conclude (but refrain from a "knowing" pronouncement) life could be out there

    Nobody should fault you for holding a different view since as mentioned nobody knows

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  18. geordief Registered Senior Member

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    Well if we take our assumption as to what the universe looked like at T+10^-43 secs we then assume that it expanded and evolved to what we observe today.

    That is the observable universe.

    However ,owing to expansion distant parts of the universe are moving away from us so fast that the light from them will never reach us and this is the unobservable universe I was referring to.

    This part of the universe presumably had its origin in the same event as the observable universe (debatable but I have assumed as such)

    Did I answer your question? (perhaps you thought I was referring to Dark Mass;I wasn't)
     
  19. hansda Valued Senior Member

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    Yes.

    As per physicist, the total energy of our universe is zero.
     
  20. NotEinstein Registered Senior Member

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    As far as I know, this is merely a popular hypothesis, not a scientific fact.
     
  21. geordief Registered Senior Member

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    Can anyone add to that? ( It was something I had been wondering about)

    If true would it follow that total mass was also zero?
    How might one go about testing it?
     
  22. spidergoat Valued Senior Member

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    Our existence isn't important.
     
  23. origin Trump is the best argument against a democracy. Valued Senior Member

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    You do not have to believe there are aliens, why do you think you do?
    Given the immense number of stars in the universe it seems likely that there are aliens. But since there is no concrete evidence of life anywhere but earth it is perfectly valid to say that you believe earth is the only place that life exists.
     

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