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What does the universe look like?

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The observable universe is thus a sphere with a diameter of about 28.5 gigaparsecs (93 billion light-years or 8.8×10 26 meters). Assuming that space is roughly flat (in the sense of being a Euclidean space), this size corresponds to a comoving volume of about 1.22×10 4 Gpc 3 (4.22×10 5 Gly 3 or 3.57×10 80 m 3).
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