The U.S. National Science Foundation says it will demolish the Sacramento Peak Observatory, also known as Sunspot Solar Observatory ...

Liquid mercury contamination has permanently shut down the Dunn Solar Telescope as NSF moves ahead with demolition in ...

One of the largest and most densely populated sunspot regions seen in more than a decade has appeared on the sun's nearside to Earth — and has begun to unleash a barrage of solar storms that are ...

Earlier this week, the number of visible sunspots on our home star fell to zero for the first time in 1,335 days. This ...

On May 29, 2020, a family of sunspots — dark spots that freckle the face of the Sun, representing areas of complex magnetic fields — sported the biggest solar flare since October 2017. Although the ...

A massive sunspot that caused last month’s intense auroras across large portions of the planet is once again returning to face the Earth. The AR3723 sunspot, which was formerly known as AR3697 and AR ...

Sunspot AR4618 erupted with an M4.4-class solar flare causing a coronal mass ejection (CME) that may give Earth a glancing blow. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Using modern techniques, researchers have re-examined Johannes Kepler's half-forgotten sunspot drawings and revealed previously-hidden information about the solar cycles before the grand solar minimum ...

New images of the sun’s surface captured by a powerful ground-based solar telescope have revealed sunspots and other features in unprecedented detail. The eight images, released on May 19, were taken ...

The sun has seen its most active month for over two decades, with a monthly average of 215.5 sunspots being recorded in August. This is the first time the average monthly sunspot number has exceeded ...

Astronomers have detected a massive group of sunspots being referred to as a "sunspot archipelago." The group is made up of at least six different sunspots, and astronomers warn it could spell trouble ...