I have just read on this site that there is a Newtonian solution to Einstein's field equation but that it is spherically symmetrical and therefore not isotropic (having a centre for example) and so considered not allowed. But if the universe is a 3-sphere it could be both spherically symmetric and isotropic. Would the Newtonian solution then be a possibility?

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    $\begingroup$ Could you add a link to the page where you read about the "Newtonian solution"? You can edit your post and add the URL (Don't worry if you can't work out how to format it right, someone will be able to fix that for you.) $\endgroup$
    – James K
    Oct 30, 2018 at 20:52


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