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Kenneth Kabbal Art & Philosophy here.

 

davidaedwards:

 At just the right distance from the center of a black hole, light can orbit the black hole in a circular orbit called a photon sphere.
 A photon sphere is a spherical region of space where gravity is strong enough that photons are forced to travel in orbits.

 The radius of the photon sphere is 1.5 times larger than the Schwarzschild radius, inside which nothing can escape.
 This image shows the paths of light rays from a point source near a black hole. 
 http://www.freshphotons.com

davidaedwards:

At just the right distance from the center of a black hole, light can orbit the black hole in a circular orbit called a photon sphere.

A photon sphere is a spherical region of space where gravity is strong enough that photons are forced to travel in orbits.

The radius of the photon sphere is 1.5 times larger than the Schwarzschild radius, inside which nothing can escape.

This image shows the paths of light rays from a point source near a black hole.

http://www.freshphotons.com