The cradle of star is a cloud of hydrogen and dust. There are numerous such cloud in the universe. By the action of external force this cloud get compressed and keep pulling itself together due to the increasing force of attraction among the particles. After a few hundred of thousand of years, it begins to shine. A proto-star, a star in the early stages, is formed. This keeps puling itself together while rotating, and becomes hotter and hotter, till its interior reaches a temperature of around 10 million degree celsius. In the core of the star, the fusion of hydrogen into helium releases an enormous amount of energy. Now, the star becomes a main sequence star. It shines approximately for 1 billion years, till it 'dies'.
 
   
DID YOU KNOW THAT......
  • The twinkling of stars is caused by the swirling air in the atmosphere and does not come from star itself.
  • Many stars are 1000 times bigger than our sun.
  • The color of stars ranges from red to yellow and to blue. Red is the coolest star and blue is the hottest. Yellow star like the sun have an average temperature.