If photons exert a gravitational attraction on other objects then how can a photon leave a gravity well like the Sun? Now if photons have a different form of (or method to generate) gravity that allows them to generate a gravity field that does not affect them (sounds like dark matter) then there would be no problem. For me, the warping of space and the slowing of time still makes the most sense for the behavior of light (massless and non-gravitational photon) near a gravity well. (This view maybe altered if the evidence for an alternate view is strong enough). Please Register or Log in to view the hidden image!