Page 4: Research news on Expanding universe

The expanding universe research area investigates the observational and theoretical foundations of cosmic expansion, originating from general relativity and supported by redshift–distance relations, cosmic microwave background anisotropies, and large-scale structure surveys. It encompasses measurements of the Hubble parameter and its evolution, constraints on dark energy and matter content via cosmological parameters, and tests of the ΛCDM model and its alternatives. Research integrates numerical simulations, precision cosmology, and data from supernovae, baryon acoustic oscillations, and gravitational lensing to characterize the expansion history, probe deviations from general relativity, and refine models of early- and late-time cosmic dynamics.