the.com/magnetic storm

The sun burps plasma, and Earth's magnetic field has a bad day.

means A temporary disturbance in Earth's magnetic field, usually triggered by a surge of solar wind or a coronal mass ejection slamming into the magnetosphere, which can disrupt compasses, radio signals, satellites, and power grids.

from Built from 'magnetic,' tracing back to Magnesia, the ancient region whose naturally occurring lodestones first revealed magnetism to the Greeks, plus 'storm,' an old Germanic word for violent, swirling disturbance. The term itself is a 19th-century coinage from geomagnetism research, once scientists began correlating sudden compass-needle jitters with solar activity — borrowing the language of meteorology because the effect, sweeping and disruptive, genuinely felt like weather, just written in invisible magnetic field lines instead of wind and rain.

cause
solar wind slamming into Earth's magnetosphere
side effect
auroras visible far from the poles
real risk
can fry power grids and satellites
1859 event
Carrington event sparked fires in telegraph stations
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