The James Webb Space Telescope (JWST) has revealed unexpectedly large and bright galaxies in the early universe, challenging traditional dark matter theories that predicted the existence of small, dim structures instead. This observation supports the Modified Newtonian Dynamics (MOND) theory, which proposes that galaxy formation occurred rapidly and disputes the role of dark matter in clumping matter together. According to Case Western Reserve University’s astrophysicist Stacy McGaugh, JWST’s findings indicate that the conventional model of gradual galaxy formation, driven by dark matter, is inconsistent with the data. Instead, MOND suggests that galaxies assembled much more swiftly, with expansion reversing as gravity took hold. JWST, launched in 2021, is designed to probe the universe’s origins and has succeeded in revealing these surprising structures. McGaugh emphasizes that the large and bright signals emitted by these galaxies were predicted by MOND, illustrating the need to rethink current astronomical models. The study raises important questions about how galaxies formed and the underlying principles of gravity, as researchers strive to reconcile MOND with General Relativity. The findings are documented in a recent paper in The Astrophysical Journal, underscoring a significant shift in our understanding of cosmic evolution.
