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Explore the ongoing cosmological puzzle known as the Hubble tension in this 56-minute conference talk that examines the discrepancy between different measurements of the universe's expansion rate. Delve into the various observational methods used to determine the Hubble constant, understand why current measurements from different techniques yield conflicting results, and analyze the potential implications for our understanding of cosmology. Examine possible explanations for this tension, including systematic errors in observations, new physics beyond the standard cosmological model, and modifications to our understanding of dark energy or dark matter. Consider the various proposed solutions and their theoretical foundations, while evaluating the current state of research efforts aimed at resolving this fundamental disagreement in modern cosmology.
