system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible to be so far away from a light source as to exist "in between" the light rays?

This is hard to explain without visuals but think of an exploding grenade.  The farther away from it, the greater chance of not being hit by shrapnel because you are "in between" the path of the projectiles.
gpt
If it's a continuously shining, isotropic (emitting evenly in every direction) light source, then the farther away you go, the less frequently a photon will hit you. You're basically on the right track, the intensity of radiation (and thus the surface density of photons hitting a surface) decreases with the square of the distance from the source.