This geomagnetic storm interfered with telegraph communications around the globe. Sparks reportedly leapt from telegraph machines, shocking operators. In Boston, employees of the American Telegraph ...

A moderate geomagnetic storm can cause minor issues for satellites, GPS signals and high-frequency radio communication. Some ...

Add Yahoo as a preferred source to see more of our stories on Google. The northern lights are pictured over Portsall in western France on January 19. - Oscar Chuberre/AFP/Getty Images Powerful solar ...

A solar storm is a catchall term that describes any disturbance in the sun that involves the violent ejection of solar ...

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 ...

Severe solar storm conditions not seen in two decades were reported this week by the Space Weather Prediction Center. These storms can create major disturbances in the Earth’s magnetic field, ...

Coronagraphs are telescopes equipped with an occulting disk to block out the overwhelming radiation emanated from the visible surface of the Sun, along with optical stops and filters that are ...

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 ...

Earth just experienced a rare S4 solar radiation storm, the most intense since 2003 — powerful for satellites and astronauts, but harmless on the ground. When you purchase through links on our site, ...