If light has no mass, how does gravitational force bend light inwards

Question

In the case of black holes, lights are pulled into by great gravitational force exerted by the dying stars (which forms into a black hole). If light has no mass, how is light affected by gravity?

In: 784

Answer 1

Einstein, not Newton. Gravity is well described in classical mechanics as interactions between masses. But once outside of that realm, it turns out, gravity changes the space-time, hence Einsteins explanation; it doesn’t affect photons, it changes the path in space that those photons travel through.