Ok I got a question. So we know that in space light travels at a constant speed of 3X10^8m/s. We also know that light cant escape a black hole gravity field. So lets assume I got a light source just near a black hole (lets assume the gravity field is radial) ,my light source is transmiting light outwards fron the black hole,in the exact oposite direction of the gravity vector. Now since we know the light cant escape than we know it will change direction and move to the black hole. The paradox is:Since the light changed its direction it had to slow down,stop and start accelerating in the diffrent direction.Thus not compling with what we all learnt,that light moves at a constant speed. Yes I know I look at this mostly on Newtonic physics,I would love to hear your quantom physics awnser to this.