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Koronal masseutslipp

Koronal masseutslipp (CME) er et utbrudd fra solkoronen (solens ytre atmosfære). En stor sky av plasma slynges ut i verdensrommet, og den består av milliarder tonn med partikler med en fart på millioner kilometer i timen. Årsaken til CME er ikke godt forstått. Astronomer er imidlertid enige om at solens magnetfelt spiller en viktig rolle.

Den mest fremtredende effekten av en CME er når den passerer jorda, og skaper en geomagnetisk storm, som kan forstyrre satellitter og strømnett

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