• Largest mass in Solar System.

• Diameter : 1.4 Million kilometer (93 Million Miles).

• Distance from Earth : 150 Million Kilometer.

• The Sun rotates every 25 - 36 Earth days.

• 92 % Hydrogen, 7% Helium and remaining various gases.

• Atmosphere of The Sun is composed of three areas : The Photosphere, Chromosphere and The Solar Corona.

• First manned spacecraft to study The Sun , Skylab In 1974 February.

• Johann Rudolf Wolf, in 1848 developed a method to count sunspots which has been called Wolf Number.