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How did the matter in our Universe arise from nothing?

12 Jan 2018, 15:01 UTC
How did the matter in our Universe arise from nothing? NASA
(200 words excerpt, click title or image to see full post)

When you look out at the vastness of the Universe, at the planets, stars, galaxies, and all there is out there, one obvious question screams for an explanation: why is there something instead of nothing? The problem gets even worse when you consider the laws of physics governing our Universe, which appear to be completely symmetric between matter and antimatter. Yet as we look at what’s out there, we find that all the stars and galaxies we see are made 100% of matter, with scarcely any antimatter at all. Clearly, we exist, as do the stars and galaxies we see, so something must have created more matter than antimatter, making the Universe we know possible. But how did it happen?

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