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

Time runs slower closer to masses. A wave-like thing traveling through this time gradient will have its path bend. All things are actually wave-like, so all things are affected.