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Thread: Big Bang?

  1. #1
    robertpmc's Avatar
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    Default Big Bang?



    Hi, I'm Robert Cheshire and would ask for opinions on the following:

    Big Bang Questions


    If, in January 2011, the Hubble Space Telescope has recorded light from a galaxy 13.2 billion light years in the past with its imagery and attitude in that epoch;
    And that this time is said to be 500 million light years after the beginning of the universe (the “Big Bang”);
    And that this light also supposedly shows an expanding universe due to its red, spectral luminescence;
    Why does that snapshot of 13.2 billion light years ago show an already “expanded” universe - i.e. formed galaxies that already existed at that time of cosmic history and were at least 13.2 billion light years apart?

    The imagery we have is feint and far away but it shows itself as it was, all those billions of light years ago.
    Of our part of the galaxy and universe it is said, or it is implied in the Big Bang Theory, that we, all galaxies, must be of the same age of origin, a consequence of the Big Bang;
    So why, after 13.7 billion light years of our purported galactic and universal existence do we now see imagery that is as old as our universal locale but that was then already 13.2 billion light years away in distance?

    If our view of that galaxy far away was known to be over a distance of 13.2 bn light years, but for the speed of light and very existence, we should have been seeing this far distant imagery shortly after our cosmic birth.

    Isn’t it agreed that this is merely as far back as the Hubble Space Telescope can “see”?

    Doesn’t the light from that time in cosmic history show that if you add 13.2 billion light years (the distance between us) to the length of time its taken to prove the distance between us (another 13.2 billion light years); and that our part of the universe (the Milky Way) was also formed from the so called “Big Bang” don’t you get at least 26.4 billion light years ago before any “Big Bang” or its “500 million light year cathartic aftermath” could possibly have occurred? Otherwise, if we assume cosmic events to have taken place within, up to or around the speed of light, we should be seeing more evidence of the cathartic activity of a newly formed universe. Shouldn’t we?

    If light were instant and had no speed limit, and if we, the observers, had lived 13.2 billion light years ago, we’d have seen galaxies in existence that were up to, or around 7.75976987913 miles away (13.2 billion light years away by todays’ measurement).

    Now is 13.2 billion light years later. We cannot say how far away those galaxies are now.

    Simply put:
    13.2 billion light years ago, our erstwhile location was 13.2 billion light years away from this or these known faraway galaxies.

    Regardless of when we came into being, galaxies existed 13.2 billion light years ago and were emitting light. The same kind of galaxies that are nearer to us, such as our own Milky Way.

    Further, if - as in “expansionist” doctrine - these galaxies have been moving away at a high rate of speed (“red-shift” theory), and that this is supposed to indicate that everything is moving away from a hitherto “singularity”, then why, 13.2 billion light years ago, were we already 13.2 billion light years apart?

    This suggests that in the first 500 million light years after the “Big Bang”, our previous location and these galaxies had already moved 13.2 billion light years apart - indicating that in the first half billion years after the so called “Big Bang”, things were moving apart at up to 26.4 times the speed of light !!
    What happened? Did rapid “expansion” pause to pose for a photo for us after 500 million light years of “light-mach 26+”, never to pick up the pace again?

    Isn’t it so that if you travelled a distance of 1 light year and it took the time of 1 year to complete your journey, you’d have travelled at the speed of light?

    And if you travelled for 500 million light years and covered 500 million light years distance, you’re also travelling at the speed of light?

    So if you travelled a distance13.2 billion light years within 500 million light years of the same point of origin, wouldn’t you be travelling at 26.4 times the speed of light, and therefore so far ahead or back in time, perhaps, that these universal questions would be as a Times crossword puzzle, a mild distraction?

    And, if two objects were moving (at equal rates) apart over this time and distance, each would be travelling at 13.2 times the speed of light (a minor tabloid puzzle). Wouldn’t they?

    Robert Cheshire
    March 28th 2011

  2. #2
    Joe Lalumia's Avatar
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    Welcome to the forum.

    No you actually get about 156 billion ly wide--or so as the size of the universe-- based on the "visual horizon" of 13.2 billion.

    That light left there 13.2 billion years ago-- and has been traveling toward us since that time. Meanwhile the universe has been expanding--

    The galaxies at this earlier time have very odd irregular shapes.

    Read this
    82: Astronomers Measure Cosmos Width: 156 Billion Light-Years | Cosmology | DISCOVER Magazine


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    You are thinking of the big bang as an explosion taking place within fixed Euclidian space. It isn't. The distant galaxies are standing still in space that itself is expanding.

    13.2 billion years ago, when the light left the galaxy, it was probably a lot closer to us. But, over the 13.2 billion years that the light has been traveling, the intervening space has expanded, so that now we are 13.2 light years apart. The light, too, has been stretching as it crossed the expanding space, which is what produces the red shift.

    Even that explanation is a simplification, because it assumes an absolute scale of time, which is not the case in the real relativistic universe. The passage of time also gets stretched, depending on how you are moving.

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    So space is expanding in every direction... so even though the Universe is about 15 billion years old light between Galaxies could be even 20 billion light away??
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    Those galaxies in the Hubble ultra deepfield are way further away than 13.2 billion light years.------------ by now.
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    Quote Originally Posted by Dublin sky watch View Post
    So space is expanding in every direction... so even though the Universe is about 15 billion years old light between Galaxies could be even 20 billion light away??
    Yeah, isn't it expected to be well over a 100 billion ly in diameter?

 

 

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