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What is the present-day status of The Copernican Principle?

Y. Nutku
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Abstract

I point out that according to the Copernican principle our universe is not unique. The way to make sense out of this statement is for us to construct a gravitational instanton that will tunnel out of our vacuum into another, to form a universe other than our Hubble bubble.

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Y. Nutku. 2005-05-13. What is the present-day status of The Copernican Principle?. https://arxiv.org/abs/gr-qc/0505066

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