The spectacle was particularly enthralling for Lisa Upton, who caught the skies over Boulder, Colo., glowing eerily red. Upton, a heliophysicist at the Southwest Research Institute, is an expert in ...

Sun’s far-side active region AR4294 produced multiple M-class and C-class flares, triggering radio blackouts, affecting solar wind, and increasing geomagnetic activity with potential auroras in ...

Scientists have captured an exceptionally rare, high-resolution view of an active region that produced two powerful X-class ...

Solar scientists are tracking a surge in activity on the sun that could unleash powerful storms toward Earth, with the ...

Sunspot AR3184 erupted with an X1.9-class solar flare. NASA's Solar Dynamics Observatory (SDO) captured the fireworks. The ...

Stealth CMEs are typically more common when the Sun is in the waning phase of its 11-year solar activity cycle.

For the first time ever, astronomers have spotted a powerful coronal flare (cme) from a star other than the Sun.

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide ...

The British Geological Society is warning that the Earth is about to get hit by the most powerful solar storm in over two decades.

Solar flares are classified based on their strength into classes A, B, C, M, and X, with each class being ten times more powerful than the previous one.

NEW ORLEANS (WVUE) - An uptick in strong solar activity could create a severe solar storm, bringing the Northern Lights as far south as Alabama and northern California. The sun produced an X5.1 flare ...