The Smallest Things of All

To understand the world around us
 And know the cosmos with less doubt
 To comprehend that there is something
 Instead of nothingness throughout
 If we're to make sense of it all
 Ask the "why" that matters most
 We should turn our focus inward
 To the smallest things that we can know
 For centuries great thinkers pondered
 How this world could be comprised
 Is there an underlying constant
 To the world before our eyes
 Ancient Greeks proposed a particle
 So infinitely small
 And they called these constructs atoms
 The smallest things of all
 From the structure of the atom
 All the elements are known
 And from elements come molecules
 As chemistry has shown
 First a nucleus sits densely
 In the center of a sphere
 And its core is protons bound to neutrons
 The atom's mass is mainly here
 About the nucleus buzz particles
 That are vastly smaller still
 Electrons with their minus charge
 In their orbitals they spin at large