Earth’s Magnetosphere Reveals New Dark Matter Signals

Scientists have turned Earth’s magnetic field and atmosphere into a planet‑sized detector to hunt for the lightest candidates of dark matter. The method sharpened constraints on ultralight axions, pushing their possible mass range to lower limits than before. In addition, the survey identified several anomalous signals that could be dark photons, a hypothetical force carrier that has not yet been observed. The findings come from a global network of magnetometers and atmospheric sensors that monitored variations in magnetic field strength and charged particle fluxes. While the axion limits tighten the parameter space for theoretical models, the dark photon candidates require further investigation to rule out conventional explanations or confirm a new particle.