Little-known phenomenon gives the California sky an unusual red glow

Little-known phenomenon gives the California sky an unusual red glow

The red auroral SAR arc near Mammoth Lakes, Calif., on Nov. 5, 2023. Courtesy of Dakota Snider The northern lights, or aurora borealis, usually light up skies over the most remote parts of the world such as Iceland and Alaska, but on Sunday night during a geomagnetic storm they appeared farther south than usual, including northern latitudes … Read more