The sun:- Sun the brightest object in the sky. It is body id

the solar system. It has a luminous sphere approximately

8,65,000 miles in diameter. It is supposed that is consists

of a liquid inner portion with a gaseous outer covering. All

kinds of the life on the earth and on other members of the

solar system depend directly or indirectly upon the

radiation from the Sun

The average distance of the earth

from the sun is about 93,000,000 miles. If we compare the

great size pf the sun with the earth, to do so we have to

represent the earth by the head of a pin struck in the

teacher?s desk, the sun would be shown by a big ball at the

other end of the class ?room. Spectral analysis shows that

sun is compose id many elements such as found in the earth .

It s surface temperature is about 6,0000C. The volume of sun

is 13,000,00 tines that of the earth and its mass is 3

,32,0000 times that of the earth.