Artemis Mission Tracker

3D mission dashboard for NASA’s Artemis lunar program, published at artemis.realgar.ch. It runs as a static Vite site on GitHub Pages and does not require Azure, a server, or an active hosting account.

Features

• 3D trajectory visualization — Orion, Earth, Moon, and the mission flight path rendered with WebGL
• Multi-mission support — Artemis I and Artemis II historical replay data
• JPL Horizons adapter — browser-side ephemeris queries when a current vector is available, with a deterministic local replay fallback
• Mission timeline and crew — mission phases, milestones, and Artemis II crew data are bundled in the frontend
• Space weather — Kp, solar-wind, and IMF data from NOAA SWPC
• Deep Space Network — normalized dish status from NASA DSN Now
• Graceful offline behavior — same-origin Pages snapshots and local fallback data keep the dashboard renderable when upstream feeds are unavailable

Data flow

The frontend adapters use this order:

1. Direct browser fetch from JPL Horizons, NOAA SWPC, or NASA DSN Now.
2. Same-origin JSON snapshots in public/data/ when direct access fails.
3. Deterministic local mission, trajectory, weather, or empty-DSN fallback data.

GitHub Pages runs npm run generate-data during every deployment and on a 15-minute schedule. The generator refreshes the snapshots without committing generated files or needing a second host. JPL Horizons normally has no current ephemeris after a mission has ended; that is expected, so completed missions use the bundled replay trajectory.

Local development

npm install
npm run dev

This starts Vite at http://localhost:5173. No Azure Functions Core Tools, Azure account, API key, or local backend is required.

To refresh the local snapshot files from the public feeds:

npm run generate-data

Run the parser tests with:

npm test

Tech stack

Layer	Technology
Frontend	React 19, TypeScript, Vite
3D engine	Three.js, React Three Fiber, Drei
Styling	Tailwind CSS 4
Charts	Recharts
Public data	JPL Horizons, NOAA SWPC, NASA DSN Now
Hosting	GitHub Pages with the artemis.realgar.ch custom domain

Project structure

src/
├── components/       # Dashboard, trajectory, charts, weather, and DSN panels
├── data/
│   ├── missionData.ts     # Browser-safe mission configuration and status
│   ├── fallbackData.ts    # Stable offline weather and DSN values
│   ├── trajectoryData.ts  # Multi-mission replay/visualization engine
│   └── artemisIData.ts    # Artemis I ephemeris points
├── lib/
│   ├── horizons.ts        # JPL browser adapter and vector parser
│   ├── spaceWeather.ts    # NOAA browser adapter and feed normalizer
│   ├── dsn.ts             # NASA DSN XML adapter
│   └── api.ts             # React Query hooks and fallback order
└── App.tsx
scripts/
└── generate-data.ts   # Scheduled same-origin snapshot generator
public/data/           # Seed snapshots copied into the Pages artifact
api/                   # Legacy Azure Functions source; not used by Pages

License

MIT — except the Orion 3D model (public/models/orion.glb) which is GPL-3.0, created by Mikius538.