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

My understanding of the black hole part of the question is that the amount of mass in the black hole actually appears to slow down time so much that the light never reaches the observer. Time stands still from our view so much so that even at the speed of light, the light itself will never reach the outside of the black hole.

So it’s actually the time part of the spacetime distortion of gravity that makes a black hole black.