On 26 Jul, Dr. Neville Jones <ntj005@xxxxxxxxxxx> wrote: > I have only just read this response from Alan Griffin's brother > regarding the very high proportion of negative parallax values in > certain catalogues. You may have read it, but you obviously haven't understood it. Maybe your doctorate is not a scientific one? > If we accept that statistical, or measurement, error is not the > primary cause of these negative values, then we are left with two > possibilities: either the whole catalogue is rubbish, or a significant > number of actual parallax observations are really negative. You insist on looking at the Tycho catalogue in which "the standard errors of the parallaxes are in most cases much larger than the parallaxes themselves", rather than the much more accurate Hipparcos catalogue, which my brother showed me today. Even then you don't understand that he has proved that the data supports heliocentrism. "There is a preponderance of positive values at a level of significance corresponding to 67 standard deviations. I don't expect you've even bothered to look at figures 3.2.7 and 3.2.8! Alan Griffin