Well I was wondering if it was vibe coded because Gemini 3 loves Three.js and that's a main selling point of the model.

Yeah, I used Claude Code, definitely started as a vibe-coded thing. First pass was just basic physics + Three.js rendering. But once I saw it working, I spent some more time on better numerical stability and adding presets from stable 3D orbits, so it turned into more of a real project.

This was posted as well to the vibecoding subreddit, where the OP said they used Claude Code.