What do you see in this image? The famous example of Rubin’s Vase tells us that one can see either a vase or two faces, not both. Do we see a donut (with no mass inside) or do we see a tremendous but invisible mass that bends light?
I believe there is a tremendous gravitational entity in this center, but not one that has any mass. Rather, its force is based on the collective mass of all matter in the galaxy. I dare you read my article. Yes, would love to read your response.