Radio waves are not blocked by clouds in the Earth's atmosphere. The spinning of an object on its axis. A magnetic storm on the Sun's surface which shows up as a sudden increase in brightness. The Sun and all of the planets, comets, etc. which revolve around it. A continuous stream of charged particles which are released from the Sun and hurled outward into space at speeds up to 800 kilometers per second.
Solar winds are very prominent after solar flare activity.
A magnetic storm on the Sun's surface which appears as a dark area. A sunspot is approximately 1500 degrees Celsius cooler than it's surrounding material. The number of sunspots we see on the Sun at any given time appears to cycle every 11 years. Human beings get a sunburn from the ultraviolet rays emitted by the Sun. X-RAYS Penetrating electromagnetic radiation which has an extremely short wavelength.