Inner Creative Universe

Centers of the universe fill my mind with questions, wanting to know what they consist of. Physically made from gases, rocks, shale, granite, etc, but what of the centers of our inner universes. What exactly do they contain? Molecules, blood, cells? It seems to be a vast void when I look at it from within, spirit-guided, nothing seeming to be energizing it at all. Looking at it all the time when writing, trying to figure out where the bluened light that fills my mind comes from when I write poetry. Continually trying to find answers to my questions, because I want to know. Wondering if other creative people can see this inner universe like I do, or not at all.