The Hubble Tension: Measurements of the universe’s expansion rate (Hubble Constant) differ depending on the method. Observations of nearby supernovae yield a higher value than predictions based on the early universe’s cosmic microwave background. This discrepancy, growing more significant with better data, suggests a gap in the standard cosmological model. Possible explanations include unknown dark energy behavior, new neutrino types, or systematic errors. Resolving the Hubble Tension could revolutionize cosmology, indicating new physics beyond the Lambda-CDM model and reshaping our understanding of the universe’s evolution and structure.
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