“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. 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.” Via.
Reblogged from Fresh Photons.
November 04, 2009, 12:02pm
