Schwarzschild Gravity Simulator
Exact Schwarzschild Geodesics
v2.3
drag to orbit · scroll to zoom
Black Hole Mass
M☉
Spacetime Grid
lines
pct
Launch Direction — click to aim
az = 180° el = 0°
Particle
Photon · null geodesic
Launch Radius
r
s
Pass Distance (impact b / rₛ)
2.00
Fan — Count & Spread
Count
Spread
deg
Mode
Uniform
Gaussian (clustered center)
Packet / Burst (clusters)
Animation Speed
▶ Launch
✕ Clear
Reference Circles
Photon Sphere (1.5 rₛ)
ISCO (3 rₛ)
Curvature Heatmap
Lensing Penumbra
Initializing…
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