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 ...

Before two dead stars slam together in one of the universe’s most violent events, their magnetic fields erupt in a storm so intense it can light up space long before the crash. Using a powerful ...

A moderate geomagnetic storm can cause minor issues for satellites, GPS signals and high-frequency radio communication. Some power grid systems in higher-latitude countries may also see small ...