If the massive gravitron was leaving a black hole it would be slowed by the black hole&#x27;s gravity.<p>(1) We should see this as some inconsistency in how gravity scales with the mass of a black hole.  The larger ones would have proportionately greater &#x27;drag&#x27; on leaving gravitrons, pulling more in.<p>(2) If they are massive, and therefore subject to slowing, shouldn&#x27;t gravity waves leaving a black hole be subject to some sort of doppler effect? Should we be looking for red&#x2F;blueshifts in these waves?<p>(3) If gravitrons have mass and are subject to gravity, what brings that gravity?  What sub-gravitron particle regulates gravity going in&#x2F;to&#x2F;out of the gravitron?  This would require a new set of particles be created by non-gravitron massive objects (ie black holes) alongside the gravitrons.  Like I said, too strange to exist.