When the eye is close to the source, it sees light diverging from the source just as it would in a flat space. But if the eye is placed halfway between points A and B , light coming from A strikes the eye in parallel lines, just as it would were the source infinitely remote from the eye. When we view the universe through our most powerful telescopes, we see images of distant galaxies undistorted. The message this light sends us is that the spatial geometry of the universe out to the distances we can detect is Euclidean. Light passing near the surface of the sun, for example, is bent in toward the sun, a phenomenon that has been observed during total eclipses of the sun.
Light falls in a gravitational field just as do material objects.
However, light travels so rapidly, is passes by the attracting source before it can fall very far, and so its fall is not easily observed. These phenomena are local and do not affect the overall geometry of the universe.