A celestial simulator inspired by Celestia (http://shatters.net/celestia), written in JS/three.js/GLSL.
A running instance of Celestiary is available at:
- 9 planets, 20 moons. Accurate major planet orbits
- 106,747 stars, 5,672 names
- 89 constellations
- Time controls for rate and direction of time
- Kinda works on mobile! :)
See open issues page for upcoming features.
yarn install
yarn test
yarn serve
# Visit http://localhost:8080/
Edits in the source directory will be available in the app on a page refresh.
For larger changes, it's also a good idea to step through the guide pages (in /guide) to make sure they'll all working.
The app runs at https://celestiary.github.io/ and is in the celestiary.github.io repo. From it grab the changes from the web repo and then push them:
git pull upstream master
git push
A first-time session downloads ~3-5MB, mostly of the stars data. Planet textures are lazy-fetched as the user moves around the scene, but will bring that upwards to ~10MB in full.
Everything is highly cacheable, so subsequent visits are brief HEAD checks on root resources.
Warm load on a local server is 260B in ~300ms (mostly cache checking). Page rendering finishes by 1s.