 Solar cycle (calendar)

The solar cycle, also known as the solar magnetic cycle, refers to the roughly 11-year cycle in which the Sun's magnetic activity increases and decreases. This cycle is marked by variations in solar phenomena such as sunspots, solar flares, coronal mass ejections, and solar radiation. The solar cycle affects solar irradiance, magnetic field configurations, and solar wind, which can have significant impacts on space weather and, in turn, influence Earth’s magnetic field and atmospheric conditions.