A powerful flare unleashed a severe solar storm that caused auroras and GPS disruptions on Earth.

You may not have noticed—how could you?—but Earth recently went through a rare S4 solar radiation storm, the strongest one we ...

Radiation storms are nothing to sniff at, big ones can take out vital satellites, which is why scientists and astronauts take ...

Tree rings hold clues about ancient solar storms. New research shows tree growth and carbon storage can shift those signals across years.

Earth's magnetic field was struck by a "severe" solar storm Monday (Jan. 19), triggering vibrant auroras in the U.S. and large parts of Europe. The storm broke a record that had stood for more than ...

While a severe G4 geomagnetic storm impressed skywatchers with vivid auroras around the world this week, a far less visible, but historically significant, space weather event was also underway. On ...

Powerful solar activity released by the sun likely created dazzling auroral displays in unexpected areas Monday evening and early Tuesday morning. It could also disrupt satellite-based communications ...