Thanks Stroller, I skimmed the article and it certainly shows the potential both for scientific research into these topics and the risks of veering off into speculation. Yes, phi is built into natural cycles and structures which display the Fibonacci sequence, and yes, it is possible to find planetary correlations with phi, eg those at http://solargeometry.com/Overview.htm . However, that is tangential to the point here, which is to describe a method for objective empirical testing of astrological claims. I found your avatar at http://www.orbitsimulator.com/BA/sbc5.GIF - the barycentre sans Sun sans Jupiter. Gravity simulator is a great site. You may be interested in the related discussion at http://www.bautforum.com/questions-a...e-gravity.html and Spiral Model of Solar System

I should say, I am not aiming here to 'preach to the choir' in Henrik's phrase. The baut pew sheet, at least in Phil Plait's expression, sees all astrology as intrinsically unfalsifiable and hence unscientific, whereas I am looking at falsifiable statistical analysis that holds out the faint prospect that weak regular correlations may be detectable when sufficiently large datasets are examined systematically.