Add Yahoo as a preferred source to see more of our stories on Google. Officially, solar maximum is defined as the peak month of a given solar cycle, based on monthly sunspot numbers. More specifically ...

We know that the sun has entered its peak phase of activity, called solar maximum. But are we still in it, or is solar maximum already behind us? Let's see what the data has to say. However, the ...

Using more than half a century of observations, Japanese astronomers have discovered that the microwaves coming from the Sun at the minimums of the past five solar cycles have been the same each time, ...

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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. German astronomer ...

Learn how four decades of solar observations uncovered hidden changes inside the Sun and what they could mean for future solar cycles and space weather. About every 11 years, the Sun moves through a ...

How accurate are past records of sunspots? In a new study published in The Astrophysical Journal, a team of multinational researchers examined the historical record and found that after the unusual ...

There may also be a slight chance of sightings from Northern Ireland and northern England. However, viewing conditions will be mixed. Showers should gradually fade overnight, but mostly cloudy skies ...

Every morning, astronomer Steve Padilla takes a short walk from his home to the base of a tower that soars 150 feet above the ground. Tucked in the San Gabriel Mountains, about an hour’s drive north ...

Fast solar winds, possibly accompanied by a glancing coronal mass ejection, could result in aurora sightings across much of Scotland tonight. There may also be a slight chance of sightings from ...