Ten years of trying, I have not been able to get anyone interested in attempting to try what is essentially as fairly simple experiment.
It is the observational evidence enforces that belief, and my ensuing proposed experiment (paper linked below) will prove that gravity can be induced without a corresponding quantity of mass.
It is the electric phenomenon that has not been sufficiently explored. A photon will gravitationally deviate near a plasma configuration. The experiment will be the proof:
Here is the paper in Web format, PDF and video, "SubSpace Experiment - Gravitational Induction"
And here is just one of the implications - The Sun's structure - which is like nothing that has ever been imagined or thought of before: