Birth Of Stars
Stars are born and may shine for thousands of millions of years before they die. A cloud of gas and dust condenses to form a young star. Some massive stars,at the end of their life,explode as supernovae and could become black holes or neutron stars. Smaller stars at the end of their life,expand into red giants and then shirnk into white dwarfs that shine dimly.
Our Sun and all the stars you can see in the night sky belong to a giant family of stars that we call our Galaxy. It contains around 100,000 million stars.This Galaxy is known as the Milky Way. Beyond our own Galaxy, there are countless other galaxies scattered all across the space.