Phenomena in the solar atmosphere, the general term for all activities. There are sunspots, spot, spot spectra, flares, prominences and coronal transient events. From the sun in the atmosphere caused by the electromagnetic process. The time when the weak strong, the average to 11 04 year cycle. In violent activities of the Sun (called solar disturbances "), a great deal of ultraviolet radiation, x-ray, particle flow and strong radio waves, which often cause the aurora on Earth, magnetic storms and ionospheric disturbances and so on.