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

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HN · launched Mar 14, 2026 · 60 upvotes (top 15%) · 4 views

Niche: interactive 3d web simulations · 157 launches, 9 in the last 7 days ▼ -47% · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Prosumer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

More like this: all 157 launches in interactive 3d web simulations →

Could you build this?

Yes An interactive 3D three-body problem simulator can be built straightforwardly in a browser using Three.js or Babylon.js paired with Runge-Kutta numerical integration algorithms, which LLMs generate accurately.

Discussion

20 comments analyzed.

Competitors mentioned: trisolarchaos.com, solgrbit.d9ng.co.kr

Concerns raised: UI covers more than half screen on mobile, Bodies frequently yeet/fly off to infinity unexpectedly, Euler solver doesn't handle misbehaved equations well, Account posts LLM-generated comments

Feature requests: Hide button for UI, WebXR bookmarklet support, Tutorial on building three-body simulators from scratch with threejs

Competitors

Other products that read as similar to this one : 2074 launches clear the similarity bar, closest 8 shown.

Attention rank: #316 of 2075 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 136 days after the earliest competitor.

  • atlas-of-physics · github · 2026-10-28 · 311 upvotes · similarity 0.62
  • Squishy 3D helpers powered by Three.js · hn · 2026-10-28 · 17 upvotes · similarity 0.61
  • PolyCSS · hn · 2026-05-27 · 5 upvotes · similarity 0.61
  • steel · github · 2026-11-09 · 194 upvotes · similarity 0.60
  • sand3d · github · 2026-11-03 · 999 upvotes · similarity 0.60
  • kaamos · github · 2026-10-25 · 21 upvotes · similarity 0.58
  • 3d-world-simulator · github · 2026-11-02 · 238 upvotes · similarity 0.58
  • Tetris3D · github · 2026-10-06 · 29 upvotes · similarity 0.57

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.