When you look out at the night sky and see stars, generally the photons from those stars are traversing great distances and times to hit the tiny 1cm opening in your eye. The difference between a hit and a miss is a few millimeters. Looking at this results in a paradox: for distant stars the angle between an hit and a miss photon approaches the Planck constant. One has to wonder how this manifests.
The study of physics has led scientists to believe that space that comprises the universe has a finite limit to continuity. You could view this as a grain or the largest distance differential where position remains unchanged in your frame of reference. If this concept was translated to a virtual reality it would be the fineness of the grid that the reality is built on. In virtual reality this block size is arbitrary but manifests obviously when the block size approaches the scale of the player.
However the relativistic universe is based on probability, so chances are Planck's constant doesn't relate to a grid but a landscape of probability with peaks and valleys corresponding to preferred and dis-favored positional states.
In real life the "grid" is so small compared to the scale at which we operate that it is relevant and difficult to even measure.
This may indeed manifest in looking at stellar distant photon emissions using a sensor like the human eye. An atom has a position and momentum that are interdependent in terms of certainty. It emits a photon that travels though space and then eventually strikes atoms in proteins in your retina (or not) and you see it. When that atom is astronomical distances from your eye the differential between a hit and miss approaches Planck's constant. This means that the probabilistic granularity of space may limit the possible trajectories the photon can take to reach the position of your eye. Some subset of photons emitted may simply not have a way to reach you because the granularity of space is manifesting. This effect would be proportional to distance and perhaps energy.
This could explain some of the "missing mass" of this universe, as mass of stars is estimated by output of energy, but some of that energy may be un-observable for objects astronomically distant.