Sunspot region 4114 has unleashed its most powerful solar flare yet — an X1.9 class that erupted late June 19, triggering shortwave radio blackouts across the Pacific Ocean, including parts of Hawaii.

NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. The image shows a subset ...

NASA captured an image of the sun emitting a powerful solar flare that could interfere with technology on Earth.

If you live in one of the 9 states forecasted to have a chance of seeing the northern lights tonight, head to a north-facing ...