@DavidHodge: I built SatRadar as a weekend project: every active satellite orbiting Earth, live, at up to 120 FPS in your browser. T…
Summary
David Hodge built SatRadar, a browser-based tool that displays over 10,000 active satellites in real-time at up to 120 FPS by running the SGP4 orbital propagator entirely on the GPU via WebGL2 shaders.
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Cached at: 05/29/26, 11:57 PM
I built SatRadar as a weekend project: every active satellite orbiting Earth, live, at up to 120 FPS in your browser.
The entire SGP4 orbital propagator runs on the GPU — inside a WebGL2 shader. The CPU does nothing per frame. 10,000+ working spacecraft, no debris.
🧵👇 https://t.co/AVohU169UA
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