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A comment on Why is there a normal galaxy sitting at the edge of the Universe?. Parent comment

Re:Why is there a normal galaxy sitting at the edge of the U... by anigbrowl on Wednesday September 09, 2020 @07:15PM (#24427053)
Is the a term for the 4-dimensional coordinate of the 'inflationary center', like there a 3d coordinate for the center of the balloon (inaccessible from the flat universe on its surface)?
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Re:Why is there a normal galaxy sitting at the edge of the U... by svachalek on Wednesday September 09, 2020 @07:29PM (#24427190)
Imagine that the balloon is actually completely flat and (to all intents and purposes) stretches infinitely in X and Y directions without wrapping around. As I understand it, we currently believe we're in a 3D version of that:

https://en.wikipedia.org/wiki/Shape_of_the_universe

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