Skip to main content

Life Cycle Of A Star

Star Life Cycle
A proto-star arises from a cloud. The shining main sequence star explodes in a supernova. Its mass collects together to form a neutron star or a black hole.

How is a star born?

The cradle of a star is a cloud of hydrogen and dust. There are infinite such clouds in the universe. Due to the explosion of stars near by these clouds in the universe the cloud gets compressed and keeps pulling itself together due to the increasing force of attraction among the particles. After a few hundreds of thousands of years, it begins to shine. A proto-star, a star in the early stages, is formed. This keeps pulling itself together while rotating, and becomes hotter and hotter, till its interior reaches a temperature of around 10 million degrees 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 10 billion years, till it dies.

Life Cycle Of A Star

Did you know that
  • The twinkling of the stars is caused by the swirling air in the atmosphere and does not come from the star itself
  • A new star is born every 20 days.
  • The colour of stars ranges from red to yellow and to blue. Red is the coolest star and blue is the hottest. Yellow stars like the sun have an average temperature.
  • Many stars are 1000 times bigger than our sun