Monday, 2 April 2012

The Universe

I understand that the universe is gathering speed as it explodes into the nothingness it is presumably filling - in other words the Big Bang is still happening.  What I don't quite get is where in the universe the big bang took place.  It cannot be expanding all in the same direction, in an odd linear way (or can it?) so there must be some central spot or source.  No?  If so, where is that spot?  If not - well: all explanations gratefully received.

5 comments:

  1. I have not tested this personally but I am told that the universe is not expanding at the edges but everywhere in all directions. Also, it seems logical that because space does not have known edges, from which one could could find the mid-point, there is no proven centre of space. Durr. The expansion of space might not be akin to ripples spreading in a pond, anyway.

    People in lab coats believe that space is curved and you can never reach the "edge". If you did, you would be back at the beginning. Therefore the big bang occurred everywhere. Or nowhere, if you want to be bleak about it.

    If space and time did not exist before the big bang (a statement as reliable as a religious credo) how can one trust this first attempt at space and time? The design might be all wrong.

    Anyway, Wynn, which universe are we talking about, yours or mine?

    Andrew J

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    1. If you did reach the edge and find yourself back where you started, would you be bumping into yourself? I suppose you would, yes, although you'd probably be quite old.

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  2. This explains also...
    http://math.ucr.edu/home/baez/physics/Relativity/GR/centre.html


    AJ

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  3. OK, so the answer is: there is no centre of the universe and the big bang wasn't actually a big bang at all, merely a big beginning, or perhaps even rather a small beginning, who knows? No-one, it seems. Sigh.

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  4. Jacob, Your Son.12 April 2012 at 02:32

    Essentially: in the beginning the Universe was created. This has made a lot of people very angry and has been widely regarded as a bad move.

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