The Sun forms the centre of the Solar System.
The Sun radiates heat and light.
The Sun is by far the largest body in the Solar System.
The Sun is one of countless stars in space.
In comparison with the other stars, the Sun is so bright because the Sun is so near.
The Sun is a yellow star.
Some stars are hotter than the Sun. Some stars are cooler than the Sun.
Some stars are bigger than the Sun. Some stars are smaller than the Sun.