At the heart of the star,
heat beyond imagining
crushes hydrogen into helium,
helium into carbon,
carbon into oxygen,
oxygen into iron.
This is how stars die:
by making something heavier than they can hold.
And then —
the star surrenders.
It hurls everything it ever made
into the dark.
Including one atom of iron.
The one this story is about.
For four billion years,
the atom drifts.
Through nothing.
Past nothing.
Toward nothing.
It does not know
where it is going.
It is going there anyway.
Then a new star ignites.
And a thin cloud of dust
begins to gather around it.
The atom
is caught
in that cloud.
The dust becomes a planet.
The planet cools.
Oceans form. Continents harden.
The atom waits
inside the rock
for two billion years.
It is not impatient.
Atoms do not know how to be impatient.
Then the rock breaks.
The Earth coughs the atom back into the light.
For the first time in billions of years,
it sees a sky.
Rain weathers it into soil.
A small green thing
pulls it up through a root.
The atom is now in a leaf.
The atom does not know it is in a leaf.
Something eats the leaf.
Something eats that something.
The atom moves
from body
to body
to body.
For thousands of years.
It has been
in dinosaurs.
In a Roman soldier.
In your grandmother.
In the river beside your childhood home.
Twenty-seven years ago,
the atom was eaten by your mother.
It traveled through her body
for several months
until it arrived
in a place
that would become your heart.
You grew around it.
For your entire life
this atom has been
inside you.
Carrying oxygen
to muscles you have used
to laugh
to grieve
to fall in love
to scroll through your phone
at 2 in the morning.
It is in you
right now.
In your right index finger.
In the iron of the blood
moving through it
as you read.
Pause for a second.
Feel your pulse.
That is the atom
that was inside a star
saying hello.
let us call this atom
atom 738 has been waiting
13.8 billion years
to be inside you
reading this sentence.