Show HN: Concordia, a 21 km rotating space city you can walk in the browser

Category: other

Tags: space-simulation, 3d, threejs, education, virtual-world

Score: 6.0/10 (Innovation: 7, Technical: 7, Documentation: 6, Utility: 4)

Concordia is a browser-based 3D walkable simulation of a 21 km rotating space city, accompanied by a guide of plain-language science pages written from a 2045 perspective. It combines real physics, engineering explanations, and an interactive Three.js scene to explore a speculative O'Neill-style habitat, making space settlement concepts tangible and educational.

Target audience: space enthusiasts, educators, students, science communicators, 3D web developers

Repository: https://concordia.davidveksler.com/ · JavaScript · NOASSERTION · 1 stars

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