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

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

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 ...

On the evening of December 5, two strong Class M solar flares were recorded. This was announced on December 7 at the ...

GREGOR's high-resolution FAST IMAGER happened to scan the sunspots in active region NOAA 14274 just 30 minutes before the emission of an X1.2 solar flare, giving researchers an unprecedented view of ...

The Sun follows a 22-year magnetic cycle, with solar activity rising and peaking roughly every 11 years. But when conditions ...

On December 1, 2025, NASA's Solar Dynamics Observatory observed a large spot on the Sun, known as Active Region (AR) 4294-96.

A rare software vulnerability triggered by intense solar radiation has forced Airbus to ground approximately 6,000 A320 ...

Airbus said in a statement on Friday that the recalls were issued because the company found that intense solar radiation ...