The Origin of Time Bootstrapped From Fundamental Symmetries | Quanta Magazine
Like fossils, astronomical objects are not randomly strewn throughout space. Rather, spatial correlations between the positions of objects such as galaxies tell a detailed story of the ancient past. Paleontologists infer the existence of dinosaurs to give a rational accounting of strange patterns of bones, said Nima Arkani-Hamed, a physicist and cosmologist at the Institute for Advanced Study in Princeton, New Jersey. We look at patterns in space today, and we infer a cosmological history in order to explain them.
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