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

Since E=mc^2, although light has no mass, its energy is mass-equivalent and is affected by gravity due to an object’s mass in the same proportion, as if it’s mass was m=E/c^2

Another way to view this is that light travels in a “straight line” through local space, but if that space itself is curved, then that “straight line” is a curve.