The sun is bursting with activity at a level that hasn't been seen in nearly a decade. In less than 24 hours, the sun fired off three X-class solar flares, the highest magnitude on the scale used to ...

The sun may produce extremely powerful bursts of radiation more frequently than we thought. Such “superflares” seem to happen as often as once a century, according to a survey of sun-like stars, and ...

After weeks of reduced activity, the sun erupted with three powerful flares on a single day. That could send solar flares toward Earth, impacting electronics and making it possible to view the ...

Astronomers have pinpointed the source of a mysterious radio burst from the Sun with a signal pattern similar to that of a “heartbeat” – an advance that sheds better light on the process behind solar ...