EventHorizon.

• Orbit: drag to see the disk from different angles. Pinch or scroll to move closer.
• Move lens: drag to reposition the black hole. The background star field bends around its new position.
• Feed matter: send a bright spiral of gas toward the center. It fades as it moves inward.
• View: cycle between Cinematic, Face-on, and Edge-on. Color cycles through Ember, Ion Blue, and Violet.
• Observatory: adjust mass, light bending, disk flow, and graphics. Save a picture or reset.
• Keyboard: focus the sky, then use arrow keys to orbit or move the lens in the current mode; + / − zoom; Space freezes motion.

The dark center captures the model’s light rays; the bright band is an accretion disk. Its distorted upper and lower arcs come from bent ray paths. This is a stylized, computationally simplified visual model, not a precision relativity simulation.

All imagery is generated on your device. No external assets, account, uploads, or audio.

Adaptive rendering keeps the observatory responsive.