Extremely active sunspot AR3664 blasted a major X8.7-class solar flare. The sunspot was behind the incredible geomagnetic ...

A minor-to-moderate geomagnetic storm may produce a strong northern lights show in some of the northernmost U.S. states ...

Scientists from Skolkovo Institute of Science and Technology, together with scientists from the University of Graz, Kanzelhöhe Observatory, and Columbia University, have discovered how coronal holes — ...