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Explore cutting-edge cosmological research through this conference session featuring three expert presentations on high-redshift universe studies and their implications for modern cosmology. Delve into how the James Webb Space Telescope has revealed tensions in our understanding of the early universe and learn about upcoming opportunities with the Square Kilometre Array in the first presentation by Tirthankar Roy Choudhury. Examine how cosmic reionization serves as a powerful tool for probing dark matter and dark energy through Girish Kulkarni's analysis of the transition from neutral to ionized hydrogen in the early universe. Discover how 21-cm radio observations provide unique constraints on cosmological parameters and early universe physics through Saurabh Singh's presentation on hydrogen line studies. Gain insights into how these observational frontiers are challenging the standard ΛCDM cosmological model and opening new avenues for understanding fundamental physics, as part of the broader "Rethinking Cosmology" conference addressing current tensions and anomalies in cosmological observations.
