Time Dilation
Compare how clocks move near mass and far away.
Spacetime Curvature
See how mass changes the shape of space.
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Black Holes
Approach the event horizon and the limit of escape.
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Gravitational Lensing
Watch massive objects bend light into arcs and rings.
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Event Horizon
Pilot a spaceship through the event horizon, one moment at a time.
Explore →Geodesics
Follow natural paths through curved spacetime.
Gravitational Waves
Visualize ripples moving through spacetime.