A Simple Modification to Make the 𝚲CDM Model Compatible with the Ages of the Most Distant Galaxies that are Being Discovered

The recent discoveries of distant galaxies with a redshift z > 10 seem to call into question the Standard Cosmological Model’s estimate of the age of the universe at 13,8 billion years. Some of these galaxies are estimated to be close to or even older than the age of the universe, a result that seems absurd. The scientific community is therefore studying the possibility of modifying this value. In this work, we ask whether, in a 13,8-billion-year-old universe, we can measure intergalactic distances significantly greater than 13,8 billion light-years. The answer found here leads to the possibility of measuring these intergalactic distances if we require a positive spatial curvature of the universe, that is, k = +1. We have studied a model of the universe with a FLRW metric, positive spatial curvature (k=+1) and an age of 13,8 billion years. This model theoretically explains experimental data concerning the distances of the most distant galaxies. A universe with a k=+1 spatial curvature during the current era, dominated by dark energy, is a plausible hypothesis according to previous work we published in this journal, and would not, in principle, contradict the Mission Planck considerations regarding the spatial curvature of the universe.

Keywords: Cosmology, Age of the Universe, Spatial Curvature, Distant Galaxy.