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Cosmology

Our observable universe is not 30 to 38 billion light years in distance.
Last post 09-30-2009 05:38 PM by SpeedFreek. 22 replies.
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  • 07-01-2009 04:42 PM In reply to

    Re: Our observable universe is not 30 to 38 billion light years in distance.

    So then really we have almost no speculation in either area, only a difference of opinion on how the term observable should be used.  Yes, I did miss that qualifier didn't I? 

    Very well.

    Signature
    “You cannot choose what reality is. It is what it is” ---- Me.
  • 09-27-2009 09:30 PM In reply to

    Re: Our observable universe is not 30 to 38 billion light years in distance.

     If greater than c expansion is possible then, given that we are not at the center of it all, the Earth is travelling "relative" to some other place in the universe" faster than the speed of light. If we are in motion in some direction at this speed then all of our measurements are skewed from our vantage point. We cannot assume to be standing still in the middle of it all.

    Honestly, we have got to come up with the real reason we see cosmological red shift. First we said matter is expanding into space, then we said that space itself must be expanding. Whats next?

    The answer could have more to do with the effects of gravity of dark matter on light than with all this make believe expansion BS. Hubble was wrong and someday we will know the truth about redshift.

    San Mig anyone?

    BQ

     

  • 09-30-2009 05:38 PM In reply to

    Re: Our observable universe is not 30 to 38 billion light years in distance.

    We never said matter is expanding into space.

    blast-of-giant-atom-created-our-universe

    The above link is to 3 pages from Popular Science magazine, from December 1932.

    At the beginning of the article it looks like they are talking about some sort of an explosion, but on page 2 we have the following:

    "The nebulae are not running away from us. Their recession is due to expansion of space. This may, perhaps, seem to be quibbling over terms, since it amounts to the same thing in the end. Nevertheless, the distinction is worth keeping. According to the relativity theory, there is a difference between the running away of the nebulae and expansion of the medium in which they are embedded."

    The idea that the Earth is apparently receding from a distant galaxy faster than c does not mean measurements are skewed from our vantage point as relativity tells us that all vantage points are essentially equivalent.

    Apart from the relatively small peculiar motions of galaxies with respect to their close neighbours due to gravitation, all galaxies can consider themselves at rest and that the rest of the universe is expanding away from them. Wherever you are, the further you look the faster a galaxy apparently recedes.

     

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