The transfer of heat from one part of a fluid or gas to another, carried out by the movement of molecules in the substance. The outermost layer of the sun's atmosphere, which extends more than two million kilometers above the sun's visible surface. The appearance and shape of the corona varies with the sun's activity cycle. The corona is most prominent when the number of sunspots reaches a maximum in the solar cycle. Coronal mass ejections may cause intense geomagnetic storms and accelerate vast quantities of energetic particles.
Flares emit high-energy atomic particles and all forms of electromagnetic radiation into space.
Gamma rays are emitted from the sun during large eruptions on the solar surface. A worldwide disturbance in the earth's magnetic field. A temperature expressed in kelvins is equal to the celsius temperature minus 273.15. The edge of the sun or planet visible to an observer or instrument. The map is created by measuring the influence of the field on a small magnetic compass.