Witness the northern lights in the northern U.S. and Midwest as solar maximum activity enhances aurora visibility.
Two giant holes appeared on the sun's surface. They're called coronal holes, and they'll send solar winds toward Earth, revealing stunning northern lights. More from News Two giant holes appeared ...
Coronal mass ejections, or CMEs, are dramatic outbursts during which the Sun blasts charged particles into space at incredibly high speeds. These outbursts occur more often when the star is in one ...