In 1998, the discovery of the Universe expanding faster challenged cosmological assumptions.Scientists explore explanations for cosmic acceleration, questioning Einstein's relativity.New research delves into theoretical models and parameters like μ and η to understand gravity.μ adjusts Poisson's equation, while η measures space-time distortions.Gravitational lensing results and galaxy clustering are key data points for testing these parameters.Researchers analyze DES data to compare distortion of time and space with Einstein's predictions.A slight discrepancy in gravitational wells 3.5-5 billion years ago hints at possible cosmic scale gravity variations.While challenging Einstein's theory, the incompatibility found is not enough to invalidate it at this stage.Further research with Euclid telescope aims to provide more precise data for testing Einstein's equations.Exploration of cosmic mysteries may lead to a reshaping of our understanding of the Universe.