This alert comes as two coronal mass ejections (CMEs) are expected to make their way to Earth this weekend. A geomagnetic ...

A solar flare erupted from a sunspot Tuesday night and is now considered the second strongest of the current solar cycle.

A planet-sized, magnetic dark spot on the sun, known as sunspot region AR3842, let out a massive burst of radiation on ...

Astrophotographer Miguel Claro captured an incredibly detailed timelapse of solar activity, revealing a roiling sun sprouting ...

Stunning Northern lights expected tonight and Friday After a major X-class solar flare erupted from the Sun late on Tuesday, ...

A series of strong solar flares and coronal mass ejections from the sun arriving on Earth give us a chance the next two ...

Early on Thursday, October 3, sunspot group AR3842 exploded once again, producing an X9.0-class solar flare. This is now the ...

Sunspots are temporary, dark regions on the sun's surface caused by concentrated magnetic activity, which inhibits the flow of hot plasma and lowers their temperature compared to the surrounding ...

As the sun reaches the height of its 11-year cycle, skygazers may only be treated to better and more frequent chances to ...

The Sun is currently experiencing an unusually intense period of activity. In August, the number of sunspots recorded reached a level unseen in nearly 23 years. What does this surge reveal? These ...

Only two of the past 32 years of summer butterfly counts have tallied fewer individuals, and three years' counts detected ...