ASOLAR ATMOSPHERE A PICTURE SHOWING THE ATMSPHERE OF THE SUN We are, indeed thrilled when we learnt about the Sunspots that exhibit a cosmic dance with their ever changing shape. The Sun, not only throws a challenge to man forever, but also fascinates. Seen from the Earth the photosphere appears to us as the boundary of the Sun. The Sun,which is essentially a huge mass of gas, has no such limitation. There are two more zones above the photosphere.They are called the Chromosphere , which is 10,000 Km thick and the Corona . Corona extends to millions of kilometres and sometimes reaches even the Earth’s orbit.In the astronomers terms, these zones are known as Solar atmosphere . DENSITY OF THE ZONES As these zones are far away from the centre of the Sun, the gravitational force falls rapidly. The Density of the gas also decreases to very low levels. For instance in the photosphere it is abou...
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