Visualization of a black hole with an orange accretion disk. The parts of the disk circling over and under the hole are actually gravitationally lensed from the back side of the black hole.[126][127]

Where light orbits

At the photon sphere, gravity bends photons into circles; any inward nudge sends them past the point of no return.

Black Holes: The Photon Sphere and Shadow

Image by the Event Horizon Telescope of the supermassive black hole in the center of Messier 87

Casting a cosmic shadow

This sphere outlines the black hole’s shadow seen by the EHT. Only light from between it and the horizon can escape to us.

Black Holes: The Photon Sphere and Shadow

DeepSwipeHomeApp StoreGoogle Play
Black Holes: The Photon Sphere and Shadow | DeepSwipe