Science ❯ Astronomy

Solar Activity

Solar Flares Geomagnetic Storms Coronal Mass Ejections Solar Storms Sunspots Auroras Solar Cycle Solar Cycles Solar Maximum Space Weather

NOAA Forecasts Minor‑to‑Moderate Geomagnetic Storm With Northern Lights Likely

Late‑July coronal mass ejections could push auroras into northern U.S. skies, making real‑time monitoring essential.

Researchers Identify Solar 'Switch‑Off' That Could Forecast Space Weather Years Ahead

NOAA Warns Solar Storms Could Bring Northern Lights to Much of Canada and the U.S. North July 3–4

X1.1 Solar Flare Causes Radio Blackouts as CME Prompts G2 Geomagnetic Storm Watch

Fast Solar Cloud Triggers G3 Geomagnetic Storm Watch

Cannibal Solar Storm From Sunspot 4455 Set to Reach Earth

NOAA Issues G3 Geomagnetic Storm Watch for June 4–5

Three Solar Eruptions Including X1.0 Flare May Combine Before Reaching Earth

Helioseismology Shows Sun’s Magnetic Activity Is Becoming Confined to a Shallow Near‑Surface Layer

Sun Emitted a Record 19-Day Radio Burst

NOAA Forecasts Northern Lights Chance Saturday Night Across Northern U.S. and Canada

Possible Glancing Solar Storm Today After M5.8 Flare Raises UK Aurora Odds

Two X-Class Solar Flares Hours Apart Trigger Dayside Radio Blackouts

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

Late CME Arrival Lowers Aurora Forecast to G1–G2 Tonight

Aurora Chances Nudge Up in Germany After Weak Solar Shockfront

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

G2 Geomagnetic Storm Alert as CMEs Approach Earth, Aurora Possible Over Northern Germany Tonight

NOAA Issues G1 Geomagnetic Storm Watch as Northern Lights Possible Across 10 U.S. States

Nostradamus Prophecies Go Viral as US–Israel Strikes on Iran Spur Fresh Reinterpretations