What many people don't realise is that astrology
has been seriously tested, not just by those nasty skeptical scientists, but also by astrologers. Hundreds of tests have been done.
The best source that I have found for serious information about astrology is
http://www.astrology-and-science.com/. This site was created by Rudolf Smit, who used to be a successful professional astrologer. It's not a particularly slick or pretty site, just a mine of information. You could start by reading the "
Grand summary of entire website", from which I quote:
"The findings have been clear and consistent whether obtained by astrologers or by scientists -- astrology has not contributed to human knowledge, it has failed hundreds of tests, it has no acceptable mechanism other than hidden persuaders, and users do not usefully agree on basics such as which zodiac to use or even on what a given birth chart indicates. Today, for the first time in twenty centuries, we can say with some certainty that no, the heavens do not reflect our destiny."
This site is the nearest thing I have found to an impartial view of astrology. The authors have studied the subject seriously - many of them are, or were astrologers themselves - and arguments both for and against astrology are presented.
Anyone thinking of creating a test of astrology would do well to peruse this site first.