Return synopsis

The results of his experiments of optical sightings consolidate those with the pendulum, which prove that the velocity of the light varies with its direction (certainly very slightly) and that the position of the Earth in its orbit can be determined on on-land experiments .

In fact, all these experimental results lead to three main concepts:

    - the existence of  the anisotropy of space

    - the determination of this anisotropy of space by astronomical influences

   - the existence of an intermediary medium (the ether), a natural support of the transmission of these influences.

3.  THE  EXPERIMENTS   OF  NASA

  3.1 As indicated at the beginning of this article, NASA, sought, at the beginning of 1999, to discover the principal causes of the differences in the trajectories of rockets and spacecraft (Pioneer 11 and 12, Ulysses), and became interested in the work of  Professor Allais.

First - of course - NASA was interested in the series of articles published more than 40 years ago, in the US  review Aerospace  Engineering, " Should the Laws of Gravitation Be Reconsidered? ",   and also by various articles and communications on similar subjects.