After watching the documentary on the formation of stars, a sudden thought rushed to my mind. Have you ever thought that what will happen to us and this world when stars die? Will all of us die too? Although you might feel that this is ridiculous, I think since the biggest star is about 40000 times as big as the Sun, its explosion should be tremendous, thus I think it has great effects on us, isn't it?

Troubled, I decided to research on this topic and eventually learnt even more about stars. Stars die when they have exhausted their vast supplies of nuclear fuel. So when hydrogen runs out, the stars will then switch to helium. However, when helium runs out, they will quickly exhaust any remaining nuclear energy and either BLOW UP, SHRINK OR GO COLD!!! (Ah......ah!) This just depends on the stars themselves.

The biggest stars have masses of nuclear fuel but live fast and die young. The smallest stars have little nuclear fuel but live slow and long. A star which is twice as big as the Sun lives a tenth as long. The biggest stars live just a few million years.