👉 Chromosphere, also known as the "outermost" layer of the solar atmosphere, is a region located below the photosphere and above the corona. It is characterized by its high temperature and low density, which allows for the presence of ultraviolet light and other types of radiation. Chromospheric activity can be classified into two main categories: photoionization and ionization processes. Photoionization occurs when electrons are bombarded with photons from the solar wind, causing them to ion