GENESIS 1:4

"And God saw the light, that it was good: and God divided the light from the darkness."

You cannot see a particle of light until and unless it interacts with a particle matter. You cannot see the beams of light streaking through space. Only when they pass through dust, or hit a planet do they reveal themselves. Their existence is only know to us this way. By definition, all matter is dark. The search is not for dark matter. The search is for light.

Where is all the light?=