ABSTRACT Planck data provide precise constraints on cosmological parameters when assuming the base ?CDM model, including a 0.17 per cent measurement of age Universe, $t_0=13.797 \pm 0.023\, {\rm Gyr}$. However, persistence ‘Hubble tension’ calls model’s completeness into question and has spurred interest in models such as early dark energy (EDE) that modify assumed expansion history Universe. W...
