Abstract
Contrary to popular belief, there is as yet no convincing evidence that the Universe has a density near the critical value required for closure. Indeed, a low-density Universe is favoured by many of the observations. Cosmologists should therefore keep an open mind about this question until it is settled by empirical data.
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Coles, P., Ellis, G. The case for an open Universe. Nature 370, 609–615 (1994). https://doi.org/10.1038/370609a0
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DOI: https://doi.org/10.1038/370609a0
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