Our nearest star is the sun. Most of the stars that we see in the night sky are also suns, only they are much further away from us. Inside the sun and every other star fantastic amounts of energy are being created by enormous chemical reactions. They have been going strong for millions of years and will carry on for millions more. Stars contain vast quantities of hydrogen. At the very high temperatures inside the stars, the hydrogen, changes into another gas called helium. This process releases the energy which we see as light.
Eventually a star uses up all its hydrogen and dies. Our own sun will die one day too but not for another 5000 million years. Though if some of our awful summers are anything to go by, you would be forgiven for thinking it was on the way out already.
Picture Credit : Google
