No. 027Simulations, in development, opened 10/28/2026
Kessler Cascade
Everything humans have put in Earth orbit, from the real public catalog: the live sky, real breakups replayed, your own collisions, and a 200-year fight against the debris cascade.
Built with Opus 5.5
1What is real
- 1Earth day and night imageryNASA Earth Observatory (Blue Marble Next Generation, Black Marble 2016)Public domain (NASA)
- 2Orbital elements, SATCAT, space weatherCelesTrak (T.S. Kelso)Free public data
- 33D enginethree.jsMIT
- 4SGP4 propagationsatellite.jsMIT
- 5Sun, Moon and planetsastronomy-engine (Don Cross)MIT
- 6Star catalogHYG Database v4.2 (astronexus)CC BY-SA 4.0
- 7Constellation linesStellarium modern sky cultureCC BY-SA 4.0
- 8CitiesNatural EarthPublic domain
- 9Everything elseBuilt by script in this repositoryNo licence yet (private repo; MIT planned before it goes public)
2How it was built
139 commits, counted from the repository history:
- Opus 5.5139
3Related files
Colophon
Each file here started as a question about whether something could be built: a mechanism, a plateau, an ecosystem, an orbit. They were built with Claude Code and kept with their sources, their status and the models that wrote them. Copy it, pass it on.