From Sabine Hossenfelder.

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Earth’s magnetic field has a hole located over the South Atlantic Ocean. It’s called the South Atlantic Anomaly and according to NASA and the ESA, it’s changing. Could this be a sign that the Earth’s magnetic field is about to flip? I’ve had a look.

Paper: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023GL107209

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