Unveiling the Enigmatic Connection Between Quasars and Dark Matter

An international team of scientists, including researchers from Chiba University, has measured the total amount of matter in the universe to be 31% of the total matter and energy, with the remaining portion consisting of dark energy. This finding aligns with previous measurements using the cosmic microwave background method. The team utilized the mass richness relation technique, which compares the observed number and mass of galaxy clusters to numerical simulations, to estimate the total matter density. The study demonstrates the effectiveness of this technique in determining cosmological parameters and highlights its potential for future datasets from various galaxy surveys.