Northern lights occur when a solar flare interacts with Earth's atmosphere.

Recent X8-class solar flare activity reveals critical weaknesses in America's power grid, where geomagnetic currents could destroy transformers and trigger prolonged blackouts.

The sun is experiencing a violent solar storm, releasing one of the strongest solar flares seen in the past 30 years ...

The flares are coming from a solar region that was created in late January.

The Sun has unleashed a quartet of strong solar flares, which could herald a wild week of space weather. It all kicked off at ...

A rapidly growing sunspot has fired off at least 18 M-class and three X-class flares in just 24 hours, including an intense X8.3 eruption.

For much of the past decade, Andrew McCarthy has been exploring the universe—albeit from his backyard in Arizona. Using telescopes with specialized filters, planetary cameras, and astro-specific ...