Visualize a Black Hole at the Event Horizon

This cute little animation shows the causal structure around a classical black hole in an interesting way. The perspective is that of a body orbiting just outside the event horizon:

Animation credit: Robert Nemiroff.

Nemiroff’s paper discussing this kind of visualization is available on

For more animations of spacetimes with screwy causal structures, visit Virtual Trips to Black Holes & Neutron Stars.

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