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

Solar flares are the most powerful explosions in the solar system, and can contain as much energy as a billion hydrogen bombs ...

A solar storm is projected to impact Earth this Saturday, potentially bringing with it a dazzling celestial light show – and ...