I have decided to start a new thread now that stellar parallax or the celestial ploes is not a proof for either heliocentrism or geocentrism. Might it not be quicker for all of us, in our discussion regarding the helio/geo debate, to ask Regner for just one proof of heliocentrism. So far it would appear that the M-M etc. experiments are all being interpreted and corrected by heliocentric theories. This is pointless since it is the helio idea that is being questioned. The problem, if any with the interferometer experiments, has to be addressed exactly for what it is and not quetioned by that which it questions - does that make grammatical sense?. I think it would be useful to know just what helio's pin their position on. As with evolution it may be easier to highlight the scientific problems and flaws with heliocentricity, since that is the current paradigm, rather than spend endless hours trying to convince helios to consider geocentrism arguments. Therfore would Regner give just one proof of heliocentrism? Jack