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10−35 meters
Before anything — everything vibrates.
Quantum wave functions. Probability rippling through the fabric of reality.
At the smallest scales, particles don't exist in one place.
They exist as probability waves.
They exist as probability waves.
The act of looking at something — changes it.
This is where you begin.
Zoom in a little more.
10−18 meters
Three quarks walk into a proton.
Two up quarks and one down quark, bound by gluons. This is a proton.
Quarks are held together by the strong nuclear force —
the strongest force in nature.
the strongest force in nature.
It's 137 times stronger than electromagnetism.
100 times stronger than gravity at these scales.
100 times stronger than gravity at these scales.
You have more protons in your body
than there are stars in the Milky Way.
than there are stars in the Milky Way.
Keep zooming out.
10−10 meters
The atom: almost entirely nothing.
An atom. The nucleus is 100,000 times smaller than the atom itself.
99.9999999%
of every atom is empty space.
remove
empty space
empty space
→
your matter
An entire human body, minus the empty space, fits on the tip of a pin.
If you removed the empty space from every human on Earth —
8 billion humans
→
one sugar cube
all 8 billion of us would fit inside a single sugar cube.
But atoms don't stay alone for long.
10−9 meters
Your blueprint is a 3.2 billion letter book.
Your DNA. Four bases — A, T, G, C — encoding 3.2 billion letters.
Stretched end to end, your DNA would reach
the Sun and back 600 times.
the Sun and back 600 times.
Yet it all fits inside cells thinner than a hair.
You share 99.9% of your DNA with every other human alive.
And 60% with a banana.
DNA is just the instructions. Who builds it?
10−8 meters
You are a chemistry experiment — that worked.
37 billion billion
chemical reactions happening inside you every second.
20,000 different types of proteins fold into precise shapes —
each one a molecular machine.
each one a molecular machine.
ATP molecules shuttle energy between reactions
like tiny rechargeable batteries.
like tiny rechargeable batteries.
You produce and consume your body weight
in ATP every single day.
in ATP every single day.
All of that, inside something you can barely see.
10−5 meters
The cell: a city in miniature.
A single human cell. Purple: nucleus. Green: mitochondria — ancient bacteria that fused with our ancestors 2 billion years ago.
37.2 trillion
cells make up your body.
Each one reading your DNA, building proteins,
responding to signals, dividing, dying.
responding to signals, dividing, dying.
330 billion cells replaced every day.
The from a decade ago doesn't physically exist anymore.
But you're not the only one living inside you.
10−6 meters
You are outnumbered — by yourself.
38 trillion
bacteria call your body home.
Bacteria swimming through your gut right now.
They digest your food. Train your immune system.
Produce vitamins. Influence your mood.
Produce vitamins. Influence your mood.
You are not one organism.
You are an ecosystem.
You are an ecosystem.
And at the center of it all…
10−4 meters
The most complex object in the known universe.
86 billion
neurons, connected by 100 trillion synapses.
Neurons firing across your brain. Each flash is a thought, a memory, a feeling.
Synapses in your brain
100,000,000,000,000
Stars in the Milky Way
200,000,000,000
Your brain has 500× more connections
than our galaxy has stars.
than our galaxy has stars.
Every second, your senses send
11 million bits of information to your brain.
11 million bits of information to your brain.
You consciously process about 50.
You're only aware of 0.0005%
of what's happening to you.
of what's happening to you.
~1 meter
, you are alive.
—
heartbeats since midnight
—
miles your blood has traveled today
—
breaths today
—
cells replaced today
Red blood cells flowing through your veins, right now.
All without you having to think about any of it.
Now zoom in on what you're made of.
You, .
7 octillion
atoms
all borrowed stardust
You are mostly water.
Water
Protein
Fat
Minerals
Other
That water is 4.5 billion years old.
It passed through dinosaurs, ice ages, and ancient oceans
before it became you.
before it became you.
Now look up.
, you are made of dead stars.
A star dies. Its elements scatter across the cosmos.
Every atom heavier than hydrogen in your body
was forged inside a star that exploded.
was forged inside a star that exploded.
The iron in your blood.
The calcium in your bones.
The oxygen you're breathing.
Stars had to die so that you could live.
Now zoom out. Way out.
107 meters
A pale blue dot.
Spinning at 1,000 mph.
You don't feel it.
You don't feel it.
A paper-thin atmosphere separates you from the void.
Everything you've ever known happened here.
Everything you've ever known happened here.
But this is just one rock.
1013 meters
Our neighborhood.
Earth orbiting the Sun at
67,000mph
Sun orbiting the galaxy at
514,000mph
Galaxy moving through space at
1,300,000mph
Our solar system. The Sun is one of 200 billion stars in the Milky Way.
You are hurtling through space at over a million miles per hour.
And you feel perfectly still.
And you feel perfectly still.
The Sun is just one star among hundreds of billions.
1021 meters
Home galaxy.
The Milky Way. 200 billion stars. It takes light 100,000 years to cross it.
200 billion
stars in our galaxy alone.
Our Sun is unremarkable. A medium star,
two-thirds of the way out on a spiral arm.
two-thirds of the way out on a spiral arm.
And ours is just one galaxy.
1026 meters
The cosmic web.
Galaxy clusters connected by filaments of dark matter and gas, spanning billions of light-years.
2 trillion
galaxies in the observable universe.
Observable Universe
Milky Way
Solar System
Earth
93 billion light-years across.
And still expanding.
And still expanding.
All of that — in how much time?
13.8 billion years of cosmic history.
If the universe's history were a single year:
Jan 1
Big Bang
Mar 16
Milky Way forms
Sep 2
Sun & Earth form
Sep 21
First life
Dec 26
First mammals
Dec 31
11:59:59 PM
11:59:59 PM
All of human history
Your entire life is the last 0.2 seconds
of December 31st.
of December 31st.
A blink. But what a blink.
Your atoms are immortal.
When you're gone, not a single atom will be destroyed.
They'll become part of the soil. The rain. The air.
Maybe a tree. A river. A stone. Another person.
Your atoms were here for 13.8 billion years
before you borrowed them.
before you borrowed them.
They'll be here for trillions more
after you return them.
after you return them.
Nothing is lost. Only rearranged.
One last thing.
While you were reading this…
—
more heartbeats
—
cells were replaced
—
miles traveled through space
All without you noticing.
From quantum foam to the cosmic web.
From quarks to galaxy clusters.
You are the universe.
A way for the cosmos to know itself.
Now go outside and look up.
Start over
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