Science ❯ Astronomy

Solar Phenomena

Solar Flares Coronal Mass Ejections Solar Storms Auroras Sunspots Solar Wind Geomagnetic Storms Solar Eclipses Solar Eclipse Coronal Holes

Sun Erupts With Two X-Class Flares, Triggering Shortwave Radio Blackouts

Space-weather agencies are watching for a possible coronal mass ejection in the next few days.

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Medieval Records and Tree Rings Pinpoint a 1200–1201 Solar Proton Event

Late CME Arrival Lowers Aurora Forecast to G1–G2 Tonight

NOAA Issues Geomagnetic Storm Watch as Aurora Chances Rise Near U.S.–Canada Border

Spain Gears Up for 2026 Total Eclipse Ahead of 2027’s Longest Land Totality

NOAA Issues G2 Geomagnetic Storm Watch as March 16 CME Arrives, Expanding Aurora Potential

Study Confirms Record Martian Electron Surge From 2024 Solar Superstorm

ESA Mars Orbiters Capture Record Ionospheric Surge From 2024 Solar Superstorm

UK Pre‑5am Sunrises: Forecast Dates After Clocks Go Forward to BST

NOAA Ups Aurora Outlook: Kp 5 Could Bring Northern Lights to 15 U.S. States Tonight

NOAA Issues Geomagnetic Storm Watch as Auroras Likely Reach 11 U.S. States

Giant Sunspot AR4366 Keeps Firing Powerful Flares as Forecasters Watch for CME Threat

Earth-Facing Sunspot 4366 Fires Off New X-Class Flares as Agencies Issue Geomagnetic Watch

New X4.2 Solar Flare Erupts From AR4366 as Earlier CME Nears Earth

NASA Confirms Five X-Class Solar Flares From AR4366 in Three Days

NOAA Flags Feb. 5 Aurora Chance for Northern Germany as Sunspot AR4366 Erupts

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

Fast Solar Wind From Small Coronal Hole Reaches Earth, Weak Storms Possible

Solar Storm Eases After Two-Decade High as Monitoring Continues

S4 Solar Radiation Storm, Strongest in 20 Years, Brings Rare Auroras as Effects Subside