Science ❯ Astronomy ❯ Space Weather ❯ Solar Activity

Coronal Mass Ejections

Sunspot AR4366 Hurls X-Class Flares as CME Is Forecast to Brush Earth Thursday

Forecasters say the magnetically complex region remains volatile with an elevated risk of further strong flares.

NOAA Warns of Strong Geomagnetic Storm Tonight as Auroras May Reach Unusually Far South

Astronomers Confirm First Coronal Mass Ejection From a Star Beyond the Sun

Auroras Sweep the U.S. After G4 Storm as Forecasters Watch for More Activity Into Thursday

Severe Solar Storm Ignites Auroras as Forecasters Track Third, Stronger CME

ESA Stress-Test Simulates Carrington-Scale Solar Storm Ahead of Sentinel-1D Launch

Simulations Reveal Space Tornadoes That Current Monitors Miss, Prompting Solar‑Sail Probe Concept

Hawaiʻi Researchers Pin Down Why the Sun Has "Rain" During Flares

G2 Geomagnetic Storm Watch Expands Northern Lights Visibility to 15 States

Geomagnetic Storm Brings Northern Lights as Far South as Alabama, Continues into June 2