What is the Sun's corona?
What is the Sun's corona? The Sun's atmosphere is called its corona. Sun's atmosphere is not like our own atmosphere. It has a temperature of 10,00,000°C and is a million times thinner than air. The brilliance of the Sun hides it from view, except during a total eclipse, when it can be seen from the Earth. The corona contains atoms of hydrogen, nitrogen, oxygen, iron and other common elements. They are so hot, and scattered so far apart that they lose some of their electrons, which fly about. During the total eclipse of Sun, the corona seems to extend for one or two Sun diameters into space (about two million kilometres). In fact, it extends out beyond the region of the Earth as a rapid outflow of atomic particles called the solar wind. The shape of the corona c...