The smoothed sunspot value, represented as the purple line on the plot below (from NOAA's Solar Cycle Progression website), differs from the black curve showing monthly sunspot measurements.

Solar cycles starting with cycle 1 to the current cycle 25. (Space Weather Prediction Center) NOAA At the solar maximum, the amount of solar storms can be numerous.

Just last month, a powerful solar storm lit up skies across the northern hemisphere, producing vivid auroras visible as far ...

Higher solar activity brings more radiation, which can damage satellite electronics and force some satellites to deorbit ...

NASA and the National Oceanic and Atmospheric Administration (NOAA) will discuss the Sun's activity and the progression of Solar Cycle 25 during a media teleconference at 2 p.m. EDT, Tuesday, Oct ...

NASA and NOAA track sunspots to determine and predict the progress of the solar cycle — and ultimately, solar activity. Sunspots are cooler regions on the Sun caused by a concentration of ...

NOAA graph of sunspot numbers over the past 20 years and the predicted numbers for cycle 25 in red (main) and sunspots on the sun (inset). August 2024 saw the highest sunspot number since September ...

The peak of Solar Cycle 25 is coming and it could mean an uptick in geomagnetic storms. Could Tennessee see the aurora borealis again?

NASA, NOAA and the International Solar Cycle Prediction Panel revealed that the sun has reached its solar maximum period, marking the peak of its 11-year solar cycle.

The latest figures on official sunspots places solar activity at its highest in 23 years, which means northern lights at southerly latitudes are set to continue.