  In the light of recent experimental and theoretical data, we go back to the
studies tackled in previous publications [1] and develop some of their
consequences. Some of their main aspects will be studied in further detail. Yet
this text remains self- sufficient. The questions asked following these studies
will be answered. The consistency of these developments in addition to the
experimental results, enable to strongly support the existence of a preferred
aether frame and of the anisotropy of the one-way speed of light in the Earth
frame. The theory demonstrates that the apparent invariance of the speed of
light results from the systematic measurement distortions entailed by length
contraction, clock retardation and the synchronization procedures with light
signals or by slow clock transport. Contrary to what is often believed, these
two methods have been demonstrated to be equivalent by several authors [1]. The
compatibility of the relativity principle with the existence of a preferred
aether frame and with mass-energy conservation is discussed and the relation
existing between the aether and inertial mass is investigated. The experimental
space-time transformations connect co-ordinates altered by the systematic
measurement distortions. Once these distortions are corrected, the hidden
variables they conceal are disclosed. The theory sheds light on several points
of physics which had not found a satisfactory explanation before. (Further
important comments will be made in ref [1d]).
