Science ❯ Astronomy ❯ Solar Phenomena

Sunspots

Solar Flares Geomagnetic Storms Coronal Mass Ejections AR3697 Solar Activity Historical Observations AR3767 Auroras Prominences Solar Maximum Magnetic Field Strength Magnetic Fields Historical Solar Cycles Magnetic Configuration Active Regions Active Sunspot Region 3664 Region 4274 Active Region 3664 Effects on Solar Wind

Geomagnetic Storm Hits G3 as Earth‑Directed CME Approaches

NOAA expects impacts to strengthen as CME material couples with a high‑speed solar wind stream.

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