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How big was the Universe at the moment of its creation? (Synopsis)

24 Mar 2017, 14:06 UTC
How big was the Universe at the moment of its creation? (Synopsis) NASA, ESA, G. Illingworth (UCO/Lick Observatory and the University of California, Santa Cruz), R. Bouwens (UCO/Lick Observatory and Leiden University) and the HUDF09 Team
(200 words excerpt, click title or image to see full post)

13.8 billion years ago, the Universe as we know it came into existence. Today, the part we can observe is 46 billion light years in radius, having grown tremendously thanks to the expansion of the Universe. But if we extrapolate that backwards, we find that the Universe couldn’t have been infinitely small at the moment of its birth, but rather was a finite size at all finite times.

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