ONE PAGE · EVERY SCALE
How big is
everything?
From the space inside a single atom to the edge of what light has ever reached us from — scroll, and find out.
INTERACTIVE
Pick a scale.
Drag the slider from the inside of an atom to the edge of the observable universe.
An atom is mostly empty space.
PERSPECTIVE
Numbers that don't quite fit in your head.
Some quantities are so large, or so small, that understanding them is really just getting used to them.
cells in your body, constantly dividing, dying, and replacing themselves.
stars in our galaxy alone, and that's a conservative estimate.
the width of the observable universe, in light-years.
heartbeats in an average lifetime, give or take.
TRY IT
Simple rules. Infinite complexity.
Move your cursor through the field below. Every point follows the same handful of rules — the same trick stars, cells, and flocks of birds all use.
WORTH REMEMBERING
Three things, before you go.
You are stardust.
Almost every atom in your body heavier than hydrogen was forged inside a star that died long before you existed.
The universe is still growing.
Galaxies are drifting apart right now, faster the farther away they are. Space itself is stretching beneath them.
You're a once-in-forever event.
Of everything matter could have become across 13.8 billion years, it became, briefly and improbably, you.
THAT'S THE TOUR
You made it to the edge of everything we can see.
There's a lot more universe than one page can hold, but now you've got a sense of scale. Thanks for scrolling all the way out here.
This was done through claude, i just thought it was cool!