Our solar system

What is a solar system?How is it formed? These questions may occur in minds of young children who has just entered the field of Science and Universe.
So,let me expain:

1. The sun is our head member or you can say father of some specific planets,like-Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus and Neptune arranged in the order of increasing distances from the sun.These group including the Sun constitute "The Solar System".
2. At first the planet,"Pluto",was a member of this solar system.Later scientists categorized it as "Dwarf Planet" and it was excluded from the title planet even from being a part of our solar system.                                                                                                                                   Tarbej Ansari