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24min chapter
Addressing the Biggest Controversies in Modern Cosmology with George Efstathiou [Ep. 436]
Into the Impossible With Brian Keating
Challenges in Modern Cosmology: Analyzing the Hubble Tension and Sigma -a -tension
The chapter discusses the discrepancies in the Hubble constant values obtained from various observations and the challenges in modifying late-time and early-time physics to reconcile this tension. It also delves into the Sigma -a -tension related to matter fluctuations and mass-density parameter, exploring potential explanations like late-time effects and modifications to gravity.
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