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Originally Posted by bobson
Universe is flat? Sounds familiar, not that long ago many thought Earth was flat too.
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A "Flat Earth" is an example of the geometry of an object embedded in space. In this case the geometry of space itself could be anything.
A "flat" Universe describes the geometry of space itself as being flat.
A "Flat Earth" is not based on scientific evidence, a flat Universe is.
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Not that long ago there was post how galaxies above us all spin one way and galaxies bellow spin other way. Like they are all spinning around something bigger? Carl said then there is no need to have anything to spin around because galaxies can do that on their own. Well, coincidentally they spin uniformly?
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Sorry I can't see the relevance. Can you provide a link?
Regards
Steven