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Solar maximum is the regular period of greatest solar activity during the Sun's 11-year solar cycle. During solar maximum, large numbers of sunspots appear, and the solar irradiance output grows by about 0.07%. [2] On average, the solar cycle takes about 11 years to go from one solar maximum to the next, with duration observed varying from 9 to ...
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] It is expected to continue until about 2030. [3] [4]
The Sun has reached a period of peak activity in an 11-year cycle known as the Solar Maximum, marked by recent geomagnetic storms and near-global aurora light displays.
The solar luminosity is an estimated 0.07 percent brighter during the mid-cycle solar maximum than the terminal solar minimum. Photospheric magnetism appears to be the primary cause (96%) of 1996–2013 TSI variation. [70] The ratio of ultraviolet to visible light varies. [71]
Scientists said the sun is now in its solar maximum, or the peak of its 11-year solar cycle.
Solar cycle 15–16 1917 – Aug 534 Solar cycle 16–17 1928 – Apr 568 Solar cycle 17–18 1937 – Apr 269 Solar cycle 18–19 1947 – May 446 Solar cycle 19–20 1958 – Mar 227 Solar cycle 20–21 1968 – Nov 272 Solar cycle 21–22 1979 – Dec 273 Solar cycle 22–23 1989 – Oct 309 Solar cycle 23–24 2001 – Nov 817 Solar cycle ...
In 2024, the sun enters its solar maximum—birds don't know what's about to hit them. Space weather may seriously send their internal compasses into disarray. In 2024, the sun enters its solar ...
To calculate the 13-month smoothed monthly mean sunspot number, which is commonly used to calculate the minima and maxima of solar cycles, a tapered-boxcar smoothing function is used. For a given month m {\displaystyle m} , with a monthly sunspot number of R m {\displaystyle R_{m}} , the smoothed monthly mean R s {\displaystyle R_{s}} can be ...