trisolarchaos.com
Learning and science
physics simulation
SHOW HN2025
How HN took it
13 positive, 27 neutral or asking, 0 mixed, 6 critical, out of 46 comments about the project. Thread score +0.19.
Design: 7 for, 1 againstExecution: 1 for, 3 againstIdea: 2 for, 1 againstPerformance: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Smooth, solid interaction and fun to explore
From 2 comments
This is really lovely work! Simple to use, surprisingly solid, and just a pleasure to poke around with. The fact it runs in the browser is a bit of magic on its own. One idea for…
TMEHpodcast on HNThe 3D presets are the standout here, especially the ones that move in and out of the orbital plane. The interaction feels smooth, and it’s great to see this level of detail…
Ethan312 on HN
3D presets that move out of the orbital plane are standout
From 1 comment
The 3D presets are the standout here, especially the ones that move in and out of the orbital plane. The interaction feels smooth, and it’s great to see this level of detail…
Ethan312 on HN
Objections
Simulation is numerically approximate and can diverge from true physics
From 2 comments
I doubt that most (if not all) are physical. This happens since these are considered as point masses, which can not collide. Instead of a collision you get extremely high forces,…
constantcrying on HNSome of the high speed ejections might be due to the approximations used. You can see this with a simple time-stepper when the forces get massive when 2 bodies get very close and…
hermitcrab on HN
Requests
Add preset systems like Alpha Centauri
From 1 comment
This is really lovely work! Simple to use, surprisingly solid, and just a pleasure to poke around with. The fact it runs in the browser is a bit of magic on its own. One idea for…
TMEHpodcast on HN
Anaglyph red/cyan 3D rendering
From 1 comment
> Open to suggestions for additional presets or features! Anaglyphic (red/cyan) 3D rendering would be nice. I've created a lot of anaglyphic 3D apps over the years, but they're…
lutusp on HN
Perturb button to nudge stable orbits
From 1 comment
How about a perturb button so those special stable orbits can be nudged just enough to destabilize them.
phkahler on HN
Show when a body has enough energy to escape
From 1 comment
I spent a long time playing with the sim. Nice work. Most of the random data sets that I ran ended up with a two body system, where the third body was flung far into space never…
buf on HN
Questions
Is there a GitHub repository?
From 1 comment
Any github?
mclau153 on HN
Is the simulation based on simple Newtonian gravity with a uniform time-step?
From 1 comment
Excellent work. Is this based on simple Newtonian gravity applied over a uniform time-step, or something more sophisticated?
hermitcrab on HN
Alternatives named
Other browser three-body simulators such as a 2D periodic-orbit demo and a four-body sense-studios simulator
From 2 comments
This is amazing! Nicely done! I did something similar, mostly 2D here: https://www.nhatcher.com/three-body-periodic/ (Mine is just unfinished)
nhatcher on HNThere is also this fun website: https://labs.sense-studios.com/threebody/index.html Simulating a four-body problem from the point of view of a telluric planet being juggled…
thrance on HN