Cosmic Messenger
Every five seconds, the ISS coordinates trace a blue arc across the sky. NASA's Astronomy Picture of the Day unfolds as a starfield backdrop while astronaut names drift like stardust. You're not watching a screen — you're gazing at real space, right now.
About This Work
Cosmic Messenger is a real-time love letter from space. Every 5 seconds, the Open Notify API provides the ISS's precise coordinates, mapped as a continuously extending blue arc across a 3D sky dome — this is the real trajectory of humanity's outpost 408 km above Earth, traveling at 7.66 km/s. The starfield comprises 5,000 multi-layered particles (GLSL Shader with twinkle and glow effects), while 4,000 particles along a tilted arc simulate the Milky Way's density distribution. NASA's APOD appears as the deepest background layer. Shooting stars streak randomly, and each astronaut's name drifts across the scene. All APIs include graceful fallback — simulated data maintains the full experience even offline.
Features
- Real-time ISS tracking (Open Notify API, 5s refresh)
- 5,000 multi-layer starfield particles (GLSL twinkle + glow)
- 4,000 Milky Way particles (tilted arc density distribution)
- NASA APOD daily astronomy background
- ISS trajectory blue arc (extending trail + pulse animation)
- Random shooting stars (30-frame trail + decay)
- Floating astronaut name animation
- API graceful fallback (simulated data)
How to Use
- ISS coordinates and astronaut list load automatically
- Watch the blue arc to track ISS trajectory
- Bottom-left panel shows ISS coordinates and astronauts
- Wait for shooting stars across the sky
- NASA APOD daily image as starfield background