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  1. #11
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    I know where you're coming from, it is hard to grasp. I kinda get it, but then if I tried to explain it someone else, I probably couldn't.

    I could be wrong here, but, imagine a deflated balloon. But imagine it has no inside, so there is not really a middle, it's just a flat, irregular shaped stretchy thing. Imagine this was a tiny atom at the moment of the big bang. The balloon then doesn't get any bigger as the Big Bang wasn't actually an explosion as such. It just begins to stretch.

    So just imagine that balloon as being a tiny, tiny atom and then just begins to stretch and stretch. So if you hold out your hand now, you are actually holding a part of the universe that was present at the Big Bang.

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  3. #12
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    thank you very much mrjaffa. I continue to stumble around in the dark on this.
    I will not give up though. I think its important to not give up on this.

    Quote Originally Posted by mrjaffa View Post
    I know where you're coming from, it is hard to grasp. I kinda get it, but then if I tried to explain it someone else, I probably couldn't.

    I could be wrong here, but, imagine a deflated balloon. But imagine it has no inside, so there is not really a middle, it's just a flat, irregular shaped stretchy thing. Imagine this was a tiny atom at the moment of the big bang. The balloon then doesn't get any bigger as the Big Bang wasn't actually an explosion as such. It just begins to stretch.

    So just imagine that balloon as being a tiny, tiny atom and then just begins to stretch and stretch. So if you hold out your hand now, you are actually holding a part of the universe that was present at the Big Bang.

  4. #13
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    The Universe started as one single point. Whether that point was very tiny or the size of the room you sit in now, it then stretched, it didn't explode outwards, it simply stretched. So, that one single point, is now everywhere.....

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  6. #14
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    that one single point is now everywhere????


    then everywhere is the center??????

    that is so awesome!!!!!!!! thank you so very much.

    I wonder about this partly because I imagine having a video of the big bang and the expansion of the universe.

    and then watching the video in reverse. like what would happen if gravity pulled everything back together into the opposite of the big bang (a big crunch).

    that makes me think that there is a center to the universe.


    but I must say that your comment that the center of the universe is everywhere is startling. and wonderful. I will think about it. I like it.
    thanks again,
    Charlie

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    Well one theory for the end of the Universe as you probably know after commenting on the Big Crunch is in fact that. So you might get to see it for yourself one day, if you're still here in trillions and trillions of years.

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  9. #16
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    thank you again mrjaffa.
    and thank you again all of you who replied.



    Quote Originally Posted by mrjaffa View Post
    Well one theory for the end of the Universe as you probably know after commenting on the Big Crunch is in fact that. So you might get to see it for yourself one day, if you're still here in trillions and trillions of years.

  10. #17
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    Quote Originally Posted by chas53 View Post
    that one single point is now everywhere????


    then everywhere is the center??????
    It was 'everywhere' even before it expanded. The universe can't be looked at from the outside looking in.
    Saying the universe was the size of an atom implies that you are outside looking in. That can't be, there is no space outside of the universe. The dimensions that we think we know where likely much different when the universe was hot, especially the dimension we call time.

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    The following is a quote from Brian's Greene The Hidden Reality.

    The expansion of space found mathematically by Friedmann and lemaitre applies verbatim to a universe that has any one of these shapes. For positive curvature, use the two-dimension mental imagery to think of a balloon’s surface expanding as it is filled with air. For zero curvature think of a balloon’s surface expanding as it is filled with air. For zero curvature, think of a flat sheet of rubber that is being stretched uniformly in all directions. For negative curvature, mold that rubber sheet into the shape of a Pringles chip and then carry on with the stretching. If galaxies are modeled as glitter evenly sprinkled on any of these surfaces, the expansion of space results in the individual speck of glitter_ the galaxies _moving apart from one another, just as Hubble’s 1929 observations of distant galaxies revealed


    The equations of general relativity also provide a precise numerical demarcation among the three possibilities. The mathematics shows that “just the right amount of matter”.the so-called critical density, weighs in today at about 2x10^-29 grams per cubic centimeter, which is about six hydrogen atoms per cubic meter or, in more familiar terms, the equivalent of a single raindrop in every earth-sized volume. Looking around ,it would surely seem that the universe exceeds the critical density, but that would be a hasty conclusion. The mathematical calculation of the critical density assumes that matter is uniformly spread throughout space . So you need to envision taking the earth, the moon, the sun and everything else and evenly dispersing the atoms they contain across the cosmos. The question then is whether each cubic meter would weigh more or less than six hydrogen atoms. Until recently, the observations indicated that the average density was on the low side, about 27 percent of the critical density_ the equivalent of about two hydrogen atoms in each cubic meter_ which would imply a negatively curved universe.

    But then, In the late 1990's, something extraordinary happened. We discovered dark energy. What’s remarkable is that the measurements have concluded that the dark energy fulling space contribute approximately 73 percent of the critical density. When added to the 27 percent of criticality astronomers had already measured, this brings the total right up to 100 percent of the critical density, just the right amount of matter and energy for a universe with zero spatial curvature!

    Current data thus favor and ever-expanding universe shaped like a three-dimensional version of an infinite tabletop or of the finite video game screen.

    He then went on to explain some of the multiverse theory. How our universe started it's expansion from inflaton field creating many bubble universe. I should note that any theory which dates back before t=0 is a hypothetical theory , meaning that there hasn't been any observational evidence yet and properly never will be.

    Inflation (cosmology) - Wikipedia, the free encyclopedia
    (video) [ame=http://www.youtube.com/watch?v=nZiROWO6iVs]‪Multiverse Theory by Dr Michio Kaku‬‏ - YouTube[/ame]

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  14. #19
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    Quote Originally Posted by chas53 View Post
    would someone please tell me what the current Big Bang theory is about the size of the Universe when the Big Bang banged??
    Short answer: plank size 1.616 10^{−35} meters.

    See more detail Planck epoch - Wikipedia, the free encyclopedia

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    is that some sort of misprint in the beginning where he says for zero curvature 2 times??????????
    first time with a balloon's surface. second time with a flat sheet of rubber.

 

 
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