How hot is the Sun

✹✹How hot is the Sun✹✹

             The Sun is one of the hottest bodies known to man. The temperature at the core of the Sun is higher than that on the surface. The temperature at the core is estimated to be about 15 million degrees centigrade. On the surface of the Sun, the temperature falls to about 6000°C. Did you know that there are other stars which have a temperature higher than that of the Sun? 

              The coolest stars known to the scientists have a surface temperature of about 1000°C, while the hottest ones have a temperature of about 50,000°C. If the temperature of a star is very high, it emits blue light. Cooler stars are reddish and very hot ones are bluish-white. The Sun is a medium hot star and yellowish in colour. 

              The strangest thing is that the thin layer of hydrogen above the visible surface of the Sun, known as the chromosphere has a temperature of about 10,000°C. This is because the energy from beneath the surface rises to the surface in the form of sound waves, which fade in the thin chromosphere and turn into heat energy. Sun's heat and light is very useful for the Earth.