The strongest solar ... the polar trees are more sensitive to [less powerful storms].” So Uusitalo’s team examined rings from three trees at different sites within the Lapland region of ...

"The CME that followed may not be Earth-directed; the region was too close to the east limb," solar physicist Halo CME wrote in a post on X. Space weather forecasters and aurora chasers are ...

This active region ... a halo CME because it appears to spread out evenly from the sun in a halo, or ring, around the sun. Halo CMEs depend on the observer's position, occurring when the solar ...

The actual event was a halo coronal mass ejection from an active region in the northeast quadrant ... As it traveled, it expanded and at solar-facing satellites—including STEREO-A, which took ...

A huge filament of solar plasma has broken off the sun's surface and is circling its north pole like a vortex of powerful winds, but scientists have no clue what caused it. "Talk about polar vortex!

Usually, the Northern Lights can only be seen in the auroral oval – a ring of light that encircles the polar caps. But the Sun is currently in its ‘solar ... of a sunspot region located ...