On Saturday, NOAA’s Space Weather Prediction Center (SWPC) noted that an M8.1 solar flare, “an eruption of energy from the ...

Solar flares and other activity can disrupt radio communications, power grids and navigation signals, according to NASA.

A sunspot 10 times larger than Earth has appeared on the surface of the sun just as an X1.9-rated solar flare occurred.

Scientists can usually spot coronal mass ejections before they affect Earth—but this one snuck past coronagraphs and ...

Radiation levels at airline flight altitudes briefly reached levels that could be potentially harmful to pregnant women.

The Sun unleashed its most powerful solar flare of 2025 on November 11, sending a burst of high-energy radiation speeding ...

A sunspot, potentially generating multiple solar flares, may lead to auroras that could be visible as far south as Alabama.

A powerful M8.1 solar flare sent a full-halo coronal mass ejection toward Earth, and scientists expect it to trigger strong G3 geomagnetic storm levels on Tuesday. Forecasts show the Kp index rising ...

A powerful X1.9 solar flare from new sunspot AR4299 triggered strong radio blackouts, as giant sunspot AR4294 rotates into ...

The Sun fired a staggering X1.9-class solar flare at the turn of the month, triggering a sudden, widespread radio blackout ...

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide swath of the globe—from northern Europe to Florida—researchers at NJIT's ...

TRAPPIST-1 looks small and calm from Earth. Up close, it is anything but. The cool red star about 40 light-years away erupts ...