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

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

A strong geomagnetic storm could interact with Earth's atmosphere within the next 24 hours, bringing the potential for ...

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.

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 previously ...

“It’s a milestone in solar physics,” said Ioannis Kontogiannis, a solar physicist at the Swiss Federal Institute of ...

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

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The Sun erupted with an X1-class solar flare.NASA's Solar Dynamics Observatory captured the fireworks in multiple wavelengths. The ...

It is the strongest solar radiation storm in over 20 years, since October 2003. The powerful weather event is expected to ...

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 moon ...