1) Solar Cycle/Sunspots- Sunspots are temporary event on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. It change continuously, but individual spots may persist for only a few hours or for many weeks and even months. The total number of sunspots has long been known to vary with an 11-year period known as the solar cycle.
The solar cycle is the periodic change in the Sun's activity including changes in the levels of solar radiation and ejection of solar material and appearance (visible in changes in the number of sunspots, flares, and other visible manifestations).They have been seen (by changes in the sun's appearance and by changes seen on Earth, for example, auroras) for several years and also
The solar cycle is the periodic change in the Sun's activity including changes in the levels of solar radiation and ejection of solar material and appearance (visible in changes in the number of sunspots, flares, and other visible manifestations).They have been seen (by changes in the sun's appearance and by changes seen on Earth, for example, auroras) for several years and also