"The great enemy of the truth is very often not the lie - deliberate, contrived, and dishonest - but the myth - persistent, persuasive, and unrealistic." -- John F. Kennedy

"Believers in the supernatural claim to have special wisdom about the world.  But real wisdom means knowing truth from falsehood, knowing the difference between evidence and wishful thinking.  Yes, the real world is mysterious and sometimes frightening. But would the supernatural make it better?  The real world has beauty, poetry, love and the joy of honest discovery. Isn't that enough?" -- John Stossel  

from: Double-blind Test of Astrology by Shawn Carlson: http://www.psychicinvestigator.com/demo/AstroSkc.htm --

"Despite astrologers' claims, Carlson found those in the study could correctly match only one of every three natal charts with the proper personality profile - the very proportion predicted by chance. In addition, astrologers in the study fell far short of their own prediction that they would correctly match one of every two natal charts provided. Even when astrologers expressed strong confidence in a particular match, they were no more likely to be correct..."
Carlson, Shawn, "A double-blind test of astrology," Nature, 318:419, Dec. 5, 1985.

Scientists have been quite baffled by the growing popularity of astrology, and a number of them have taken the time to carry out careful studies to see if there is any actual correlation between planetary positions at birth and any attribute of the individual in later life. No statistically valid study has ever shown any connection that would give any validity to any astrological concept-no matter how vaguely that concept has been worded! There is no question about the simple fact that astrology does not work.  Nor is there any reason why it should work.

"Astrology, which has been built since its origin on completely irrational bases, is thus undoubtedly classified among the false sciences and cannot in any case be classified as a real science. Indeed, it remains completely inadmissible in a scientific vision of the Universe for a great number of reasons: divergences between astrologers, hazardous and often unverifiable nature of astrological predictions, vague nature of the so-called astral influences, etc.
"...simple observation removes any scientific validity and any credibility from a construction based on an ancient and medieval cosmological vision which is completely obsolete, and which placed the Earth at the center of a finite universe of a small size, as well as on a so-called privileged position of the Man in the cosmos. Indeed, the Sun, no more than the Earth, does not occupy the center of the Universe at all.

"psychologist Bernard Silverman of Michigan State University looked at 2,978 marriages and 478 divorces for 1967 and 1968 to see if ``compatible'' astrological signs were more likely to get and stay together. He found that there was no correlation -- compatible and incompatible signs got married and divorced equally often."

No. A number of studies have been done which have failed to find any predictive power in astrology. Psychologists have also done studies showing that people will agree with almost any statement made about them provided that it is a mild compliment. Hence testimonials and personal impressions about how accurate a horoscope is are not evidence that astrology works.

"Astrology is part of our past, but astrologers have given no plausible reason why it should have a role in our future."  --I. W. Kelly

"Modern science has devastated the foundations of astrology at every possible point. For instance, the time of birth of an individual is in no way significant. The individual is formed at conception, 9 months before birth. What are the astrological implications of caesarian sections or induced deliveries? Modern biology has uncovered the molecular basis of genetic inheritance, and there is no room for astrology anywhere in the picture."

Culver, R., Ianna, P. Astrology: True or False, p215 Prometheus 1988 -    "A double blind test of astrologer John McCall was organized at the University of Virginia by Charles Tolvert and Philip Ianna. McCall claimed an 80 percent success rate in choosing the correct natal horoscope for a subject from three false ones. Twenty-eight subjects were chosen according to McCalls requirements (naturally born caucasians). McCall had 7 successes out of 28 trials, exactly the number predicted by chance."

Silverman, Bernie I., Contemporary Astronomy by J. Pasachoff, cf p437 W. B. Saunders 1977 and
Kop, P., Heuts, B. Journal of Interdisciplenary Cycle Research 5, 191974

The above 2 studies found no correlation between marriage/divorce rate and sun sign combinations in the state of Michigan and the city of Amsterdam.

John McGervey Physicist Case Western Reserve University - Found that the sun signs of 6,000 politicians and 10,000 scientists were randomly distributed, showing in essence that there is no correlation between astrological sign and personality.

Shawn Carlson - A Double-blind Test of Astrology - Nature, 318, 419 1985 - 116 adults filled out California Personality Index surveys and provided natal data. One set of natal data and the results of three personality surveys (one of which was for the same person as the natal data) were given to an astrologer who was to interpret the natal data and determine which of the three CPI results belonged to the same subject as the natal data. The San Francisco chapter of the National Council for Geocosmic Research recommended the 28 astrologers who took part. They approved the procedure in advance and predicted that they would select the correct CPI profiles in more that 50 per cent of the trials. Out of 116 trials, the astrologers chose the correct CPI 34 per cent of the time. This agrees with the random chance prediction of 1 of 3 trails producing a correct choice. Horoscopes were prepared by professional astronomers for 83 subjects. Each subject was given three charts, one of which belonged to the subject. In 28 of 83 trials the subject chose the correct chart. This is the success rate expected for random chance.

Dean, Geoffrey - Astrological readings were done for a groups of subjects. The content of some of the readings were reversed (changed phrases describing the subject to their opposites). Subjects reported that both the reversed and normal readings applied 95 per cent of the time.

Gauquelin, M. "L'Influence des Astres, Etude Critique et Experimentale" Dauphin Press 1955 - Found no correlation between occupation and the zodiac signs containing Mercury, Venus, Mars, Jupiter, Saturn, and the Moon at the time of birth.

Gauquelin, M. The Cosmic Clocks, p84 Henry Regnery Co. 1967 - Found random distribution of the house containing Saturn for successful individuals, and the house containing Mars for murderers.

Barth, J., Bennet, J. Leonardo 7, 235 1974 - Found no correlation between occupation, medical problems, height, longevity, and the zodiac signs containing Mercury, Venus, Mars, and Jupiter at the time of birth.

Culver, R., Ianna, P. Astronomy Quarterly, 1, 85 1977 - Pretty much the same study and results as the previous reference. Additionally, no correlation was found between occupation, medical problems, etc. and angular separation (along the ecliptic) of planet pairs at time of birth.

Dean, G. "Does Astrology Need to be True? Part 1: A Look at the Real Thing" Skeptical Inquirer, 1987 - Astrologers prepared horoscopes for subjects correct natal data. Reversed charts were then constructed from the correct charts by retaining the sun sign, but reversing all of the planetary aspects. Half of the subjects were given correct charts, the other half were given reversed charts. There was no correlation between the perceived accuracy of the charts and whether the subject was given a correct or reversed chart.

Dwyer T. Unpublished word described in Dean, 1987 - Horoscopes were prepared for correct natal data and for a birth date 5 years and 6 months before the correct date, with the correct sun sign retained. Thirty subjects were given the correct and incorrect charts. Half of the subjects picked the correct chart, half chose the incorrect chart.

http://www.scripturessay.com/q319c.html
Q. What does the Bible have to say about astrology?

"Not much. As I'm sure you are aware, astrology is based on bad science. The basis of astrology is a belief that the universe revolves around the earth. I know that in modern times astrologers have updated their beliefs and materials, but it still must be admitted that astrology has its beginnings in a flawed view of the universe..."