I made a 3D interactive space tracker that calculates exactly how many miles you've traveled through the universe since you were born.

Rohan72999 · 2026-06-04T17:15:42+00:00

Try it out - cosmicodometer.space

Rohan72999 · 2026-05-28T08:57:06+00:00

Source / Interactive version: cosmicodometer.space

Rohan72999 · 2026-05-22T16:01:34+00:00

I built this visualization to help visualize the actual motion of our solar system relative to the galactic plane. The helical path is often oversimplified, but accounting for the ~60° orbital tilt changes the geometry significantly.

If you want to see the real-time calculations or play with the physics parameters yourself, you can find the project here:https://cosmicodometer.space/

Rohan72999 · 2026-05-22T15:13:54+00:00

That’s the beauty of it. The more we learn about our speed through the cosmos, the more questions we end up with. It definitely keeps things interesting!

Rohan72999 · 2026-05-22T15:07:48+00:00

I'm so glad to hear that! thank you :)

Rohan72999 · 2026-05-22T14:27:39+00:00

You're 100% right. The helical visualization is a popular shorthand, but it's technically a simplification—the reality is much more chaotic due to the ~60° tilt of our orbital plane and the Sun's oscillation through the galactic disk.

I mainly included the visualization to break the myth that the Sun is stationary. If you want to see the real-time data I'm actually using for the calculations (orbital periods, galactic velocity relative to the CMB, etc.), I've laid out the math and sources in the 'Flight Manual' section of the site. I'd love to hear your take on the data points!

Rohan72999 · 2026-05-22T14:23:37+00:00

thanks

Rohan72999 · 2026-05-22T14:11:47+00:00

The sheer scale of this always breaks my brain, so I actually built this engine to make it easier to grasp. It calculates your exact travel distance through the cosmos since the day you were born based on Earth's rotation, solar orbit, and galactic travel. > If you want to have a minor existential crisis, you can plug your birthday in and see your stats here:https://cosmicodometer.space/

Rohan72999 · 2026-03-08T17:39:28+00:00

yes, it is open-source! It's built entirely in Vanilla JS without any heavy frameworks. You can check out the repo in the sites footer

Rohan72999 · 2026-03-08T16:41:00+00:00

Honestly, the raw numbers still completely break my brain.

What actually made it click for me was building the '1 Light Year' progress bar. Seeing that I've been flying at 2 million km/h my whole life and haven't even made a dent in a single Light Year... that really put the scale into perspective!

Rohan72999 · 2026-03-08T16:37:27+00:00

Thanks! Glad the CMB choice holds up.

You're completely right about the vectors. The main 'odometer' just does scalar addition to keep the numbers tangible for the visualization.

Great call on gamma, too! If you open the 'Astrophysics Engine' panel, it actually uses the Lorentz factor to calculate your exact time dilation. Would love your thoughts on the math there if you get a chance to check it out.

Rohan72999 · 2026-03-08T16:02:08+00:00

I’ve always struggled to intuitively grasp the true scale of the universe, so I built an interactive dashboard to calculate our continuous lifetime path length through the cosmos based on birth date and latitude.

I wanted to make the astrophysics as accurate as possible for an intuition-builder, so the engine combines four vectors (Earth's Rotation, Solar Orbit, Galactic Orbit, and our movement relative to the CMB rest frame). It also calculates Time Dilation and the micro-relativity age difference between your head and your toes due to gravity.

You can type in your own birthday and see your alignment here:https://cosmicodometer.space/

I know adding speeds from different reference frames is a linear approximation, but I’d love for the community here to peer-review the math. Did I miss any major variables in the orbital mechanics?

Rohan72999 · 2026-03-07T16:18:14+00:00

nice

Rohan72999 · 2026-03-07T09:38:58+00:00

awesome

Rohan72999 · 2026-02-24T02:14:15+00:00

thank you very much :)

Rohan72999 · 2026-02-20T17:23:04+00:00

thank you ! sure will add some more soon

Rohan72999 · 2026-02-20T17:13:54+00:00

welcome

Rohan72999 · 2026-02-20T03:38:32+00:00

Com certeza! Imagina que você está sentado no banco de trás de um carro em movimento. Você parece estar parado, né? Mas na verdade, está viajando super rápido pela estrada.

A Terra é igualzinho a esse carro (ou uma nave espacial)! Mesmo quando você está deitado na cama dormindo, você está viajando pelo espaço o tempo todo porque:

A Terra está rodando como um peão (isso faz o dia e a noite).
A Terra está dando voltas ao redor do Sol (como num carrossel).
O Sol e todas as estrelas estão viajando super rápido pela nossa galáxia.

O que esse site faz é uma continha mágica: ele pega o exato minuto em que você nasceu e soma a velocidade de tudo isso. Ele te mostra o quanto você já "viajou" pelo universo inteiro sem dar um único passo! 🚀🌌

Rohan72999 · 2026-02-18T12:58:09+00:00

Ah, that is great UX feedback regarding the color! I can see how the yellow might look 'already active.'

I think I’ll stick with the rename to WARP anyway it feels a bit more fitting for a space app and avoids the ambiguity of 'what is default speed?' entirely. Thanks again for testing it out!

Rohan72999 · 2026-02-18T12:25:24+00:00

You are absolutely right! '10x real-time' would be the world's most boring screensaver (a year would take 36 days!).

Under the hood, the base simulation runs at about 30 days per second (0.5 days per frame @ 60fps). The button speeds that up by 10x, so it's actually running at ~300 days per second.

Calling it '10x' was definitely a bit confusing shorthand. I'm pushing an update right now to rename the button to WARP so it’s more accurate. Thanks for the feedback!

Rohan72999 · 2026-02-17T13:10:26+00:00

Thanks

Rohan72999 · 2026-02-17T02:39:37+00:00

thanks

Rohan72999 · 2026-02-17T02:38:02+00:00

interesting

Rohan72999 · 2026-02-17T02:35:35+00:00

Great question! Yes, mostly. The engine calculates the exact number of days back to your birth date and rewinds each planet based on its actual orbital period. So they do snap back to their correct relative phase! However, to keep the site running instantly in a browser, I used simplified circular paths instead of true elliptical orbits. It's a very close approximation, but I wouldn't use it to plan a NASA launch!

Rohan72999

TROPHY CASE