Why Is Light Affected By Gravity?

The theory of relativity states that massive objects warps the spacetime around it. Since photons travel the shortest distance between two points, light appears to be bent when it travels through the warped spacetime of a massive object. What this means is that gravity doesn’t directly bend the light by influencing the motion of photons; it’s just that the spacetime around a massive object (a black hole) is warped and light takes the shortest path (which is a little curved), making it look like the black hole is affecting the motion of light.

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