  Supermassive black holes have been discovered at the centers of galaxies, and
also in globular clusters. The data shows correlations between the black hole
mass and the elliptical galaxy mass or globular cluster mass. It is shown that
this correlation is accurately predicted by a theory of gravity which includes
the new dynamics of self-interacting space. In spiral galaxies this dynamics is
shown to explain the so-called `dark matter' rotation-curve anomaly, and also
explains the earth based bore-hole g anomaly data. Together these effects imply
that the strength of the self-interaction dynamics is determined by the fine
structure constant. This has major implications for fundamental physics and
cosmology.
