If the study of light is looked at from a saner point of view, it becomes obvious it does not, in fact, travel at the speed of light in a particle form! Like the straw through the potato trick, if any particle (the Photon) traveled that fast, we would not be able to cast shadows. Visioning light and/or energy either from something as powerful as the sun or as weak as your kitchen flashlight, we soon realize there are no moving particles. only transference of radiation in an ever decreasing strength, relative to the source. Hence, this mysterious space filling particle which is in all void spaces of matter, the photon, is your dark matter. Quite apparent, don't you think?

If the human mind can imagine it, it can be achieved!