Photon Sphere
Ray-traced live · general relativity

Photon Sphere

Nothing here is a picture. Each pixel fires a ray of light into curved spacetime and follows it until it escapes, lands on the disk or falls in. The glow above the hole is the far side of the disk, bent up and over the top.

Your distance
28.0 rs
Your clock
0.982× far-away time
Escape speed
0.19 c
Light paths
0.0 million / s
rs is the radius of the event horizon
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