The massive sunspot that sparked an "extreme" geomagnetic storm in May 2024 unleashed hundreds of other dangerous solar ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A spot on the sun 10 times larger than Earth has been seen ...

The sun is not a static, tranquil sphere of gas, but an active, turbulent star with magnetic fields that twist and snap in powerful eruptions. Among the most striking and energetic of these eruptions ...

With a particularly active sunspot rotating into Earth-facing view, the first X-flare has been recorded since June. The sun released an X1.8-class flare early Tuesday afternoon, with an associated ...

Update, Nov. 5, 2025: NOAA has upgraded its forecast to a G3 (strong) geomagnetic storm, meaning up to 21 U.S. states may see aurora overnight on Nov. 6-7, 2025. Two X-class solar flares — the ...

After a day that saw the sun release strong solar flares, the Space Weather Prediction Center has issued a strong geomagnetic storm watch for the planet. Over the last 24 hours the sun has released ...

The Sun fired a staggering X1.9-class solar flare at the turn of the month, triggering a sudden, widespread radio blackout across Australia and large parts of southeast Asia and it seems like another ...

The region has unleashed at least two powerful solar flares in the last 12 hours, and experts are certain there's more to come. Reading time 2 minutes The Sun is currently in the active phase of its ...

Update: November 11, 5:09 p.m. ET: NOAA has issued a G4 warning for a severe geomagnetic storm for November 12. This CME, associated with the X.51 solar flare, is the most energetic and fastest of the ...