The Size of Space is one of those Neal.fun experiences that makes you feel incredibly small in the best way possible. You scroll through the universe, starting with an astronaut and ending at the edge of the observable universe. Along the way, everything just keeps getting bigger and bigger until your brain kind of gives up trying to process it all.
It starts with things you can wrap your head around. An astronaut, a space shuttle, the International Space Station. Normal stuff. Then you scroll a bit more and suddenly you’re looking at asteroids, then planets, then the Sun. Earth looks tiny next to the Sun, which makes sense. But then you keep going and the Sun starts looking tiny too. That’s when it hits you how ridiculous the scale of space actually is.
The further you go, the wilder it gets. You’ll see black holes, nebulae, and entire galaxies. The Milky Way shows up and it’s massive, but then you realise there are things even bigger than that. By the time you reach the observable universe at the end, everything you scrolled past feels like a speck. It’s humbling in a weird way.
Each object comes with a bit of info so you’re not just staring at shapes. You actually learn something about what you’re looking at and why it matters. It’s educational without feeling like a lecture, which is hard to pull off.
There’s no game here, no points, no timer. You just scroll and take it in. That’s what makes it work so well. It’s calm, focused, and lets you go at your own pace. Some people rush through to see how big things get. Others take their time and read everything. Both ways work.
How To Use The Size of Space
There’s basically nothing to figure out. You open the page and start scrolling. Each scroll brings you to a larger object. That’s the whole thing.
You can use your mouse, arrow keys, or just drag to move through. As you go, new objects appear with their names and some facts about them. It’s smooth and easy to follow, even if the scale of what you’re seeing is anything but easy to comprehend.
There’s no end goal or completion screen. You just keep going until you hit the observable universe, then you’re done. Or you scroll back if you want to see something again. It’s flexible like that.
The Size of Space is the kind of thing you open out of curiosity and then end up sharing with someone because it’s just that cool. Simple idea, incredible execution.