Solar Cycle 25 reached its peak in October 2024, but a rare “double peak” ...

May and June 2024 saw the highest sunspot numbers on the sun since 2002, but is the peak of the solar cycle here yet? The sun follows an 11-year solar cycle of increasing and decreasing activity.

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Solar Cycle 25 has begun. During a media event on Tuesday, experts from NASA and the National Oceanic and Atmospheric Administration (NOAA) discussed their analysis and predictions about the new solar ...

Scientists decode Johannes Kepler’s 417-year-old sunspot drawings, solving a long-standing mystery about solar cycles and the ...

Despite only being halfway through our current solar cycle, the sun is showing signs of starting another. The sun is approaching the solar maximum of its current 11-year solar cycle, meaning that it ...

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 ...

This split image shows the difference between an active Sun during solar maximum (on the left, captured in April 2014) and a quiet Sun during solar minimum (on the right, captured in December 2019).