Looking Up is a live map of the brightest objects in low Earth orbit. Every glyph is a real satellite – its position computed in your browser, every frame, from current orbital elements using SGP4, the same propagation model NORAD uses. The globe is a three.js scene pushed through a custom ASCII shader; the useful part is the pass list, which tells you when the ISS, Tiangong, or Hubble will cross your sky and whether you'll see it with the naked eye.
A three.js globe pushed through a custom ASCII GLSL shader. SGP4 orbital propagation runs in your browser via satellite.js – positions are computed, not fetched. TLEs come from Celestrak through a small serverless proxy (edge-cached, with a snapshot baked in at build as fallback); land/ocean dot data is generated at build time from Natural Earth; esbuild bundles it. No framework.
I'm Chase Conching – a designer/developer in Honolulu making a series of small experiments at chase.is. This is one of them: real data, real physics, rendered as something worth staring at.
data: celestrak · land: natural earth · built with three.js & satellite.js