Earth’s magnetic field is shifting — and satellites are feeling it

More than a decade of satellite monitoring has mapped Earth’s magnetic field as it subtly altered between 2014 and 2025 — and what scientists have learned is remarkable. The South Atlantic Anomaly, a weak region, is expanding, the north magnetic pole is moving towards Siberia, and the unseen shield that protects life against solar and cosmic radiation is evolving at a rate never recorded before.