Ejercicio 2

The life and death of a star

Born of the star

A star begins as a cloud of hydrogen and helium

The cloud begins to warm as more dust and gases are pulled into it.

Long period of time as the cloud becomes denser, heat and friction cause the atoms to explode.

Death of star

Will burn for about ten billion years as it radiates heat and energy.

When the hydrogen begins to burn out the star becomes even larger

In this stage, it gives off a lot of light but not much energy

The star may continue to burn brightly but dies when it runs out of hydrogen