How big it is: 865,000 miles (1.392 million kilometers) across ...

The images show ultra-fine bright and dark stripes (called striations) in the thin, gaseous layer of the sun's atmosphere ...

A team of solar physicists has released a new study shedding light on the fine-scale structure of the sun's surface. Using ...

Sunspot AR3186 erupted with an X1-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

A solar flare is a burst of radiation on the sun, according to NASA. They are the most powerful explosions in the solar ...

NASA’s Solar Dynamics Observatory captured an X2.8-class solar flare and a pair of m-flares that preceded it in multiple ...

X2.7-class eruption from sunspot AR4087 disrupts radio signals as the active region rotates toward Earth, raising the risk of ...

The most powerful eruption of 2025 so far was observed last week, and caused a 10-minute period of 'degraded communications' ...

Flares and solar eruptions can impact radio communications, electric power grids, and even pose risks to spacecraft and ...

In the span of two days last week, the sun released two strong solar flares — meaning the solar system experienced its most powerful explosions which can cause some communications blackouts on ...

The new sunspot responsible for this powerful blast is rotating into view, which could bring more solar activity—and potential aurora-causing coronal mass ejections—to Earth in the coming days ...

The sun roared to life early Tuesday (May 14), unleashing a powerful X-class solar flare from a newly emerging sunspot region AR4087. The eruption peaked at 4:25 a.m. EDT (0825 GMT), triggering ...