NASA alert: Growing South Atlantic Anomaly raises concern over Earth’s magnetic field
20 Nov 2025 | Category: Science
NASA tracks the growing South Atlantic Anomaly, revealing weak magnetic fields, potential satellite risks and some insights into Earth’s core dynamics and magnetic field reversals.
A vast weak spot in Earth’s magnetic field is expanding. This region, known as the South Atlantic Anomaly (SAA), stretches between South America and southwest Africa. NASA describes it as a “dent” or even a “pothole in space.”
Monitoring of the South...
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