Space Weather

The way in which the radiant displays of colors in the sky known as auroras form on Earth may be how these lights arise throughout the solar system, according to new findings from Mercury.

Two coronal mass ejections have combined into an enormous cloud of magnetized plasma that is forecast to hit Earth on Tuesday and potentially trigger a strong geomagnetic storm.

A new video shows off the sun's incredible power. A 'solar tornado' erupted from the surface in April, and you can watch it in 4K resolution.

As the U.S. celebrated July 4, the sun hosted its own fireworks display in the form of a coronal mass ejection "double punch" that NASA predicts could strike Earth on Friday (July 7).

The giant sunspot AR3354 blasted out an X-class solar flare on Sunday, July 2, ionizing Earth's atmosphere and causing a shortwave radio blackout over the U.S. and the Pacific Ocean.

The sun has produced 163 sunspots in June, the highest monthly number in more than two decades, sparking concerns that Earth may soon face space weather trouble.

Neutral particles accelerated to incredible speeds could be used to investigate powerful solar storms, according to a new study.

A massive new sunspot is visible without using a telescope or binoculars, but you'll still need to protect your eyes when observing it.

The world's largest solar telescope has captured the sun's fine features in remarkable detail, including rare glimpses of dying sunspots.

The sun has released a barrage of solar flares in the past 24 hours. The culprit? A giant sunspot that's slowly rotating to directly face Earth — and it's not alone.

A pair of eruptions seen on the sun might lead to a display of auroras for parts of the northern and central United States on May 11.

It's believed that only 3% of all sunspots display reverse polarity as this one does.

The sun fired a huge cloud of plasma directly at Earth on Sunday evening (May 7), an outburst that could boost auroras in the next day or so.

The sun may reach the peak of its current solar cycle in 2024, one year ahead of official predictions, new research reveals. But solar mayhem may still occur in the next five years.

A new AI-powered computer model is trained to predict when and where solar storms will strike Earth, giving us time to prepare infrastructure that could be impacted, such as the power grid.

A powerful solar flare knocked out radio communications on Earth last night in what space weather forecasters fear might be the beginning of a spell of rough space weather in the coming days.

A stealthy solar storm surprised forecasters, causing spaceflight delays and incredible aurora displays as far south as New Mexico.

A 'hole' in the sun's upper atmosphere may soon generate another geomagnetic storm here on Earth, creating auroras in places farther from the poles than usual.

NASA's Solar Dynamics Observatory captured what might be 'the tallest tornado' in the solar system swirling across the north pole of the sun.

The powerful solar storm that struck Earth earlier this week treated an American astrophotographer to unexpected aurora displays during a shooting trip to California's Death Valley.