Understand?

I understand.

I stand under the stars, 
watch aliens in a cartoon that are stars,
see cells in a brain that are brains -
and I understand.

But then, I stand under those same stars 
and see aliens
watch a baby grow, 
and see life
walk on the sand, 
(and realise that commas are not yet comatose)
and realise that where I stand is neither
where I stood a second ago, nor 
where I'll ever stand again.

Standing there;
a planet in a universe,
a universe of planets,
I sometimes think I understand.

But then I stand up,
or did I just stand down?
Put my hand up,
drop my hand down.
Reach for the stars,
or are they just straws?
(maybe they're imaginary alien's jaws)

I took a step, 
I took a stand,
But funny, somehow, I don't understand.

Do you understand?