How Long Is the Solar Activity Cycle

The solar cycle is an approximately 11-year cycle experienced by the Sun. During the solar cycle, the Sun’s stormy behavior builds to a maximum, and its magnetic field reverses.

What is the current solar cycle?

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 smoothed minimum sunspot number of 1.8. It is expected to continue until about 2030.

Is the solar cycle 22 years?

Each time the sunspot count rises and falls, the magnetic field of the Sun associated with sunspots reverses polarity; the orientation of magnetic fields in the Sun’s northern and southern hemispheres switch. … This solar cycle is, on average, about 22 years long – twice the duration of the sunspot cycle.