ExploraTour - How to Build a Star
The sun converts an enormous amount of mass into energy every second. In the time it takes you to count to one, the sun changes the mass of a million elephants into energy. It has been doing this since it became a star ... long before the dinosaurs appeared on Earth.
This is not to say that the sun is made of jelly beans or elephants. It is actually made of hydrogen and helium (the gas that makes balloons lighter than air).