Image: kerr-descent.vercel.app · A pixel-art black hole with a glowing disk of gas, its far side bent up over the dark shadow.
Kerr Descent, a pixel-art fall into a spinning black hole
Claude Opus 5.5 agents built an interactive page tracing light through Kerr spacetime in the browser.
Credits
Earliest dated source:
The full story
The maker wanted to understand what falling into a black hole would be like and had Claude Opus 5.5 build an interactive site. It is a free, full-screen pixel-art journey from Earth into a rotating (Kerr) black hole that traces light through the spacetime in real time in the browser, with no libraries.
An orchestrator agent planned the work and posted tasks for executor agents. The maker only steered on high-level decisions, such as adding a sense of scale; Claude added journey animations, sound and comparison ghosts, and a side panel explains what the viewer sees.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: I got Opus 5.5 to build Kerr Descent to help me visualize and understand more about black holes.Reddit poster: ringnirPosted
The maker's post on r/ClaudeAI.
If it disappears: archived copy of Reddit: I got Opus 5.5 to build Kerr Descent to help me visualize and understand more about black holes. (opens in a new tab)
- The project: kerr-descent.vercel.app
The project page.