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Solar cycle 25 is the current solar cycle, the 25th since 1755, when extensive recording of solar sunspot activity began. It began in December 2019 with a minimum smoothed sunspot number of 1.8. [ 2 ]
On Oct. 3, the strongest solar flare of Solar Cycle 25 happened when a region of sunspots sent an X9.0 flare blasting out from the Sun. X-class denotes the most intense flares, while the number ...
Following is a comparison of the growth of cycle 25 versus cycle 24, using the 13-month sunspot averages, beginning with the months of the respective minimums. Numbers in brackets for cycle 25 indicate the minimum possible value for that month, assuming there are no more sunspots between now (Jan 3, 2024) and six months after the end of the ...
A previous panel convened by NOAA, Nasa and the International Space Environment Services (ISES) in 2019 predicted Solar Cycle 25 would be weak and peak in July 2025 at a maximum sunspot number of 115.
A preliminary consensus by a solar cycle 25 Prediction Panel was made in early 2019. [24] The Panel, which was organized by NOAA's Space Weather Prediction Center (SWPC) and NASA, based on the published solar cycle 25 predictions, concluded that solar cycle 25 will be very similar to solar cycle 24. They anticipate that the solar cycle minimum ...
The solar storms of May 2024 (also known as 2024 Mother's Day solar storm [1] or Gannon storm in memory of Jennifer Gannon, [2] a space weather physicist [3]) were a series of powerful solar storms with extreme solar flares and geomagnetic storm components that occurred from 10–13 May 2024 during solar cycle 25.
At peak times of the solar cycle when many sunspots appear on the Sun's surface, 10 meters can be alive with extremely long-distance signals, refracting from the F2 layer in the ionosphere. Generally speaking, the most effective and efficient propagation of 10-meter radio waves takes place during local daylight hours.
The flare that erupted from this sunspot was classified as an X3.1-class solar storm. [56] Independent scientists of the National Solar Observatory (NSO) and the Air Force Research Laboratory (AFRL) predicted in 2011 that Cycle 25 would be greatly reduced or might not happen at all. [57]