Earth’s Magnetic Field Stuns Researchers: Equator’s Polarity Flips as South Atlantic Weak Spot Expands
Satellite data shows Earth’s magnetosphere reverses electric polarity near the equator, overturning decades of assumptions, according to a Kyoto-led team. ESA’s Swarm mission finds the South Atlantic Anomaly has expanded by nearly half the size of continental Europe and is developing a new lobe toward Africa, raising radiation risks for satellites.