Your understanding seems rather sound Andrew
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Do you know what lies beyond our observable Universe? Can there be a diameter we expect currently emcompasses all that there is?
I think Karl suggested 100 billion light years but I wonder if we can work out such a thing. if it is infinite there is no way it can be measured one would think.
I think Prof Hawking suggested Bubble Universes but I have no idea of what was suggested but one would think the word Universe can have no plural as there can be only the one.
alex
