The Sun's surface is currently riddled with sunspot groups that could potentially erupt a few solar flares this weekend. So ...

Anyone can get sunspots, but they usually appear around age 40—thanks to more years spent in the sun. These spots happen when cells that produce skin pigment (called melanin) overproduce after ...

The sun was well observed during the period of the Maunder Minimum and this lack of sunspots is well documented. This period of solar inactivity corresponded to a climatic period called the ‘Little ...

A minor geomagnetic storm is forecast for Wednesday March 5. Chances remain strong for seeing the aurora borealis in the months ahead.

The biggest stories of the day delivered to your inbox.

As the spring equinox approaches, northern lights hunters will scour the skies for breathtaking displays of color.

Computer models that factor in the Sun's impact on Earth's surface temperatures are providing more accurate simulations of ...

The sun ended the weekend with a bang as a sunspot rotating out of our view erupted with a powerful solar flare on Sunday afternoon. At 2:27 p.m. EST (1927 GMT) on Sunday, (Feb. 24), a X2.0 solar ...

Galileo was among the first to observe that the Sun was marked by small dark imperfections. Observers began to keep track of these sunspots, noting not only their variable number but the fact that ...