Satellite alignment around Andromeda galaxy defies cosmological models

Berlin, Germany (SPX) Apr 14, 2025
New research from the Leibniz Institute for Astrophysics Potsdam (AIP) has revealed a striking anomaly in the satellite galaxy system surrounding Andromeda (M31), casting doubt on long-held assumptions within standard cosmology. The study, published in Nature Astronomy, shows that more than 80% of Andromeda's dwarf galaxy companions are clustered on one side of the host galaxy-a configuration pr