What Shape Is the Universe? A New Study Suggests We’ve Got It All Wrong https://www.quantamagazine.org/what-shape-is-the-universe-closed-or-flat-20191104/ … via @QuantaMagazine
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If you do not know that mathematical properties of the entities that build spacetime, then you are not going to figure out the shape of spacetime in the universe. BTW that is a separate question from the distribution of the particles that exist in spacetime.
