A fundamental test for physics: the galactic supermassive obscure bodies
  The problem of the enormous gravitational effects observed by the astronomers in several galactic nuclei with obscure bodies appears puzzling. These bodies are too large to be neutron stars generated by supernovae of primeval stars and are too small to be considered a new kind of obscure galaxies. This contradiction represents a fundamental test which might destroy the established gravitational theories. We present a new physical paradigm which substitutes the old "gravitational mass" guessed by Newton more than tree centuries ago. 
Maurizio Michelini