Earth gravity is only partly Casimir pressure gravity from space combined with opposing Graviton Strings coming out of the the Massive Earth.
The Propeller shaped Fermions of the Earth seem to transform the Space based Axions (by milling) into Gravitons creating a weaker anti gravity pressure scaterring force.
see: "Grand Unification of 4 Forces according to the Quantum FFF Model by Di-Monopole Repeller Rigid String Pressure."
And: Emergent Gravity by Dipole Repeller Rigid String Pressure the Origin of Quantum Gravity and Non Inertial Black Holes.
and: and: The Cosmic Structure is filamentary in form, based on Travelling and splitting Dark Matter Black Holes or "Tadpoles "