One side there is vast universe, which has no end no beginning. On the other hand there are tiny particles, which we cannot see. These are the fundamental building block of our universe. It creates molecules, atoms that combine and recombine to create everything starting from small material, planets, start to our endless universe. It also created us.

molecule

Molecule

atom

Atom: Fundamental building block

In order to know our mysterious universe we have to understand these fundamental particles.