It makes life on Earth possible : the Sun.

 

 

 

     I am the Sun.

I am a star in other words I'm  a big ball of gas on fire.

I illuminate and warm the Earth.

 

 

     Eight planets revolve around me : Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The first four are solid planets on which you can walk.

The last four are gas planets : we can't walk on them.

And all these planets rotate also on themselves !