A Mystery of Space: S T A R S- [How Does a Star Work?] U12

Humans use the same process that stars use. Humans use it to make electricity, and stars use it to shine. This process is called nuclear reaction. Imagine the core of a star. Inside, a giant thermonuclear reaction is taking place. The nuclear reactions that happen in stars can last for billions of years.
A star is made in a huge cocoon of dust grains, gas, and molecules. The gas starts to get smaller, and the temperature rises. When the temperature reaches about 1,800,000º F. a nuclear reaction starts. The end of a star's life is marked when the star runs out of fuel for it's nuclear reaction.