Why do we need the Sun?

The Sun is a star.
It is like a blowing ball of hot gasses
producing a vast amount of energy which streams
through space in waves of light and heat.
This energy is essential to life on Earth.
Without it our planet would be so cold and dark
for plants and animals to survive.

The Sun is about 150 million km from Earth.
The Sun is made of a gas called Helium.
Much of the Sun is made of a gas called Hydrogen.