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Is space-time smooth or chunky?

29 Apr 2020, 13:42 UTC
Is space-time smooth or chunky? Shutterstock

What is the fundamental nature of reality? Is space-time — the four-dimensional fabric of our universe — ultimately smooth at the tiniest of scales, or something else? It seems impossible to measure, but with the power of advanced telescopes peering through billions of light-years of distance, researchers are beginning to look down. Deep down.

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