Earth’s Magnetic Field Stuns Researchers: Equator’s Polarity Flips as South Atlantic Weak Spot Expands
New satellite data overturns a decades‑old assumption about the magnetosphere’s electric polarity, while ESA’s Swarm mission maps a fast‑changing weak region over the South Atlantic that matters for satellites—not people. Published: November 12, 2025 The big picture Two complementary breakthroughs