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🌍 When strong auroras appear far from the poles, they can disrupt GPS, radio, and even power grids by sending extra electric currents through Earth's upper atmosphere. ✨ #aurora⚡#atmosphere⚡#geomagnetism⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels ​

🌍 Earth’s magnetic field flips direction every few hundred thousand years, a process called geomagnetic reversal. These flips are recorded in volcanic rocks and help scientists trace ancient geologic changes. ✨ #geomagnetism⚡#volcanism⚡#cycles⚡#geography⚡#nature⚡#earth 👉subscribe Amazing Geography 👉more Channels ​