Sunspot AR3663 erupted with powerful X1.6 and M4 solar flares. NASA's Solar Dynamics Observatory captured the fireworks.

In terms of categorization of solar flare intensity, the letter X signifies the highest level of energy dissipated by the ...

Our planet was rocked by some of the worst geomagnetic storms in more than 20 years. Triggered by a slew of solar flares, the ...

An X-class solar flare has produced an Earth-directed coronal mass ejection, increasing solar activity and raising the likelihood of geomagnetic impacts within 24 hours.

Researchers have identified a newly recognized type of extremely energetic particles located in the Sun’s upper atmosphere, revealing a phenomenon that had not been detected before. Solar scientists r ...

Beautiful yet dangerous solar flares that erupt from the sun could be as hot as 180 million degrees Fahrenheit, researchers say. That's more than six times hotter than solar physicists ...

Scientists observed a single solar active region continuously for 94 days, revealing how magnetic fields grow and trigger massive flares. This unprecedented study could improve space weather ...

Researchers followed a single solar hotspot for 3 months as it unleashed nearly 1,000 flares, revealing insights about our Sun's fury.

The Sun erupted with an X1-class solar flare.NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths. The flare caused radio blackouts on sunlit portion of Earth ...

Scientists tracked active solar region NOAA 13664 for 94 days, showing how persistent magnetic complexity drives flares and ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. NASA’s Solar Dynamics Observatory has captured the ...