They are like
S p a c e  and  E a r t h
Always have been
Ever since birth

They are not like
Fire and water
They never will be
They never were

Space and Earth
are two different things
Space sounds airy
But Earth really sings

Earth has color
Filled with glee
Where Space has none
Earth has three

Space is dark
Full of emptiness
Earth is filled
And doesn't feel numbness

Although opposites
They work together
They get the job done
They'll never wither

Without each other
They wouldn't work
The universe would die
The clock would stop

So be thankful
There are people like them
Without their existence
There would be mayhem