  The new information-theoretic Process Physics provides an explanation of
space as a quantum foam system in which gravity is an inhomogeneous flow of the
quantum foam into matter. The older Newtonian and General Relativity theories
for gravity are analysed. It is shown that Newtonian gravity may be written in
the form of an in-flow. General Relativity is also analysed as an in-flow, for
those cases where it has been tested. An analysis of various experimental data
demonstrates that absolute motion relative to space has been observed by
Michelson and Morley, Miller, Illingworth, Jaseja et al, Torr and Kolen, and by
DeWitte. The Dayton Miller and Roland DeWitte data also reveal the in-flow of
space into matter which manifests as gravity. The experimental data suggests
that the in-flow is turbulent, which amounts to the observation of a
gravitational wave phenomena. A new in-flow theory of gravity is proposed which
passes all the tests that General Relativity was claimed to have passed, but as
well the new theory suggests that the so-called spiral galaxy rotation-velocity
anomaly may be explained without the need of `dark matter'. Various other
gravitational anomalies also appear to be explainable. Newtonian gravity
appears to be strictly valid only outside of spherically symmetric matter
systems.
