Show HN: I built an interactive 3D three-body problem simulator in the browser

https://structuredlabs.github.io/threebodyproblem/

by amrutha_ • 4 months ago

60 20 4 months ago

structuredlabs.github.io

kurthong2• 4 months ago

https://solgrbit.d9ng.co.kr/ Had a similar idea and built a prototype for it.

kurthong2• 4 months ago

Had a similar idea and built a prototype for it. :)

hermitcrab• 4 months ago

Random3D seems to always have all the stars heading off to infinity.

Nevermark• 4 months ago

Occasionally two will tight spiral off together.

(Experimentally 5/250, including 1 cool wide, almost flat spiral.)

ubezon• 4 months ago

Very cool! nice to be able to export json too

hazrmard• 4 months ago

Very cool! Interesting how the choice of solver affects the solution. Euler doesn't handle misbehaved equations very well. You can see this in the Helix setup where the bodies just fly off.

westurner• 4 months ago

Notes re: Multi-body problems on "Show HN: Browser-based interactive 3D Three-Body problem simulator" (2025) https://news.ycombinator.com/item?id=45981336 which has Velocity Verlet integration method, 4th-order Runge-Kutta (RK4), and Kepler solvers

kordlessagain• 4 months ago

No Weber very sad.

koolala2• 4 months ago

needs a WebXR bookmarklet

curseofcasandra• 4 months ago

The tri-Solarians could have just used this!

qingcharles• 4 months ago

They did :) That's why they said fuck that and moved to Earth.

neondude• 4 months ago

Feedback : The ui covers more than half my screen on mobile browser

tecoholic• 4 months ago

+1 Please add a hide button for the UI. I love the animation. Unfortunately can’t see it fully

djmips• 4 months ago

I set the zoom to 50% in the browser and was able to see well.

koolala2• 4 months ago

When I hit Random 3d to see a normal three-body they yeet out of existence far far away.

modeless• 4 months ago

How many of these are there? https://trisolarchaos.com/

vivzkestrel• 4 months ago

- i have seen a tonne of these

- would be nice if someone at this point actually made a tutorial on how to go about making one from scratch with threejs

throwaway290• 4 months ago

these days they don't know because they didn't actually write this:)

efilife• 4 months ago

OP's account posts LLM generated comments almost exclusively, this is likely not an exception

ranger_danger• 4 months ago

But I thought Terrence Howard solved it already /s

Show HN: I built an interactive 3D three-body problem simulator in the browser

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