Interactive visualization of light cones tilting inward as one approaches the singularity.
Learn MotionBlack Holes: Physics, Structure, and Theory
Geometry of Spacetime and Tidal Forces
Visualizing Spacetime Geometry
4 / 5
Let's visualize the geometry itself. Look at these light cones. Far from the black hole, you can move in any direction in space, or stay still. But as you approach the horizon, the cones tip over. Inside the horizon, the future light cone points entirely toward the singularity. There is no path that leads out. Moving forward in time literally means moving toward r=0. This is why the singularity is not just a place in space, but a moment in your future.
0:00 / 0:00