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Astrology refers to any of several systems, traditions or beliefs in which knowledge of the apparent positions of celestial bodies is held to be useful in understanding, interpreting, and organizing knowledge about human affairs and events on Earth. A practitioner of astrology is called an astrologer or, less often, an astrologist or astrolog.

The etymological origin of the word "astrology" is the Greek word αστρολογία, derived from άστρον, astron, "star" and λόγος, logos, which has a variety of meanings generally related to "systematic thought or speech". Logos is written in English as the suffix, -ology, denoting a "study or discipline".

Although the two fields share a common origin, modern astronomy as practiced is not to be confused with astrology. While astronomy is the study and observation of celestial objects and their movements through space, astrology is the study of the supposed correlation of those objects with earthly affairs.

Description

The core beliefs of astrology were prevalent in most of the ancient world and are epitomized in the Hermetic maxim As Above, So Below. The famous astronomer/astrologer Tycho Brahe also used a similar phrase to justify his studies in astrology: Suspiciendo despicio — "By looking up I see downward." Although the principle that events in the heavens are mirrored by those on Earth was one generally held in most traditions of astrology across the world, historically in the West there has been a debate among astrologers over the nature of the mechanism behind astrology and whether or not celestial bodies are only signs or portents of events, or if they are actual causes of events through some sort of force or mechanism.

Many of those who practice astrology believe the positions of certain celestial bodies either influence or correlate with people's personality traits, important events in their lives, physical characteristics, and to some extent their destiny. However, there is some agreement amongst modern astrologers that the universe acts as a single unit, so that any happening in any part of it inevitably is reflected in every other part (thus "as above, so below" is still held to be true).

All astrological traditions are based on the relative positions and movements of various real and construed celestial bodies as seen at the time and place of the event being studied. These are chiefly the Sun, Moon, planets, and the lunar nodes. The calculations performed in casting a horoscope involve arithmetic and simple geometry and serve to locate the apparent position of heavenly bodies on desired dates and times based on astronomical tables.

In past centuries astrologers often relied on close observation of celestial objects and the charting of their movements, and might be considered a protoscience in this regard. In modern times astrologers have tended to rely on data drawn up by astronomers and set out in a set of tables called an ephemeris, which shows the changing positions of the heavenly bodies through time. Many astrologers throughout history made major contributions to astronomy so as to add proficiency to their astrological efforts such as Tycho Brahe, Johannes Kepler, Nicholas Copernicus and many others.

Traditions

There are many different traditions of astrology, some of which share similar features due to the transmission of astrological doctrines from one culture to another. Other traditions developed in isolation and hold completely different doctrines, although they too share some similar features due to the fact that they are drawing on similar astronomical sources, i.e. planets, stars, etc.

Significant traditions of astrology include but are not limited to:

• Babylonian astrology
• Horoscopic astrology and its specific subsets
  • Hellenistic astrology
  • Jyotish/Vedic astrology
  • Medieval & Renaissance horoscopic astrology
  • Modern Western astrology with its specific subsets
    • Modern tropical and sidereal horoscopic astrology
    • Hamburg School of Astrology
      • Uranian astrology, subset of the Hamburg School
    • Cosmobiology
    • Psychological astrology or astropsychology
• Chinese astrology
• Persian-Arabic astrology
• Kabbalistic astrology
• Mesoamerican astrology
• Tibetan astrology

Horoscopic astrology

Horoscopic astrology is a very specific and complex system of astrology that was developed in the Mediterranean region and specifically Hellenistic Egypt sometime around the late 2nd or early 1st century BCE that deals largely with astrological charts cast for specific moments in time in order to interpret the inherent meaning underlying the alignment of the planets at that moment based on specific sets of rules and guidelines. One of the defining characteristics of this form of astrology that makes it distinct from other traditions is the computation of the degree of the Eastern horizon rising against the backdrop of the ecliptic at the specific moment under examination, otherwise known as the ascendant. Horoscopic astrology has been the most influential and widespread form of astrology across the world, especially in Africa, India, Europe and the Middle East, and there are several major traditions of horoscopic astrology including Indian, Hellenistic, Medieval, and most other modern Western traditions of astrology.

The horoscope

Central to horoscopic astrology is the calculation of a horoscope, or astrological chart. This is a diagrammatic representation in two dimensions of the celestial bodies' apparent positions in the heavens from the vantage of a location on Earth at a given time and place. The horoscope of an individual's birth is called a natal chart. In ancient Hellenistic astrology the rising sign or ascendant demarcated the first celestial house of a horoscope, and the word for the ascendant in Greek was horoskopos. This is the word that the term "horoscope" derives from and in modern times it has come to be used as a general term for an astrological chart as a whole. Other commonly used names for the horoscope/natal chart in English include natus, birth-chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, nativity, cosmogram, vitasphere, soulprint, radical chart, radix, or simply chart, among others.

The tropical and sidereal zodiacs

The path of the sun across the heavens as seen from Earth during a full year is called the ecliptic. This, and the nearby band of sky followed by the visible planets, is called the zodiac.

The majority of Western astrologers base their work on the tropical zodiac, which evenly divides the ecliptic into 12 segments of 30 degrees each with the start of the Zodiac (Aries 0°) being the Sun's position at the March equinox. The zodiacal signs in this system bear no relation to the constellations of the same name but stay aligned to the months and seasons. The tropical zodiac is used as a historical coordinate system in astronomy.

All Jyotish (Hindu) and a few Western astrologers use the sidereal zodiac, which uses the same evenly divided ecliptic but which approximately stays aligned to the positions of the observable constellations with the same name as the zodiacal signs. The sidereal zodiac is computed from the tropical zodiac by adding an offset called Ayanamsa. This offset changes with the precession of the equinoxes.

Branches of horoscopic astrology

Every tradition of horoscopic astrology can be divided into four specific branches which are directed towards specific subjects or used for specific purposes. Often this involves using a unique set of techniques or a different application of the core principles of the system to a different area. Many other subsets and applications of astrology are derived from the four fundamental branches.

There are four major branches of horoscopic astrology.

• Natal astrology, the study of a person's natal chart in order to gain information about the individual and his/her life experience.
• Katarchic astrology, which includes both electional and event astrology. The former uses astrology to determine the most auspicious moment to begin an enterprise or undertaking, and the latter to understand everything about an event from the time at which it took place.
• Horary astrology, a system of astrology used to answer a specific question by studying the chart of the moment the question is posed to an astrologer.
• Mundane astrology, is the application of astrology to world events, including weather, earthquakes and the rise and fall of empires or religions.

History of astrology

The origins of much of astrology that would later develop in Asia, Europe and the Middle East are found among the ancient Babylonians and their system of celestial omens that began to be compiled around the middle of the 2nd millennium BCE. This system of celestial omens later spread either directly or indirectly through the Babylonians to other areas such as India, China and Greece where it merged with pre-existing indigenous forms of astrology. This Babylonian astrology came to Greece initially as early as the middle of the 4th century BCE, and then around the late 2nd or early 1st century BCE after the Alexandrian conquests, this Babylonian astrology was mixed with the Egyptian tradition of Decanic astrology to create Horoscopic astrology. This new form of astrology, which appears to have originated in Alexandrian Egypt, quickly spread across the ancient world into Europe, the Middle East and India.

The objective validity of astrology

Astrology is a very controversial subject. The case for and the case against astrology's objective validity are discussed in more detail in the main article.

Few astrologers today believe that a causal relationship exists between heavenly bodies and earthly events, but there are a number who have called for better statistical studies (for example, Mark McDonough, the President of Astrodatabank ) and several individuals (most notably French psychologist and statistician Michel Gauquelin and German researcher and professor of psychology Suitbert Ertel ) claim to have found correlations, but not causation, between some planetary positions and certain vocations.

Many astrologers have posited acausal purely correlative relationships between astrological observations and events, such as the theory of synchronicity proposed by Jung. Others have assumed there was a religious mechanism in operation, such as divination.

The majority of the scientific community believes that astrology is a pseudoscience. There has been strong criticism of astrology, as there is no widely accepted evidence that astrology as a system has a falsifiable, scientific basis though individual astrological predictions may be subject to disproof.

Where tested, modern western astrologers have shown a consistent lack of predictive power .

A thoroughly researched, well-documented, and referenced paper, which conducted a large scale scientific test, involving more than one hundred cognitive, behavioral, physical and other variables, found no hint of support for astrology.

Astrology has repeatedly failed to demonstrate its effectiveness in controlled studies, according to the American Humanist Society. The group, advocating against all things supernatural, characterised those who continue to have faith in astrology as doing so "in spite of the fact that there is no verified scientific basis for their beliefs, and indeed that there is strong evidence to the contrary."

Skeptics of astrology say that the perceived accuracy of astrological predictions and descriptions of one's personality can easily be accounted for by the fact that we tend to exaggerate positive 'hits' and overlook whatever does not really fit, especially when vague language is used (see Forer effect).

Effects on world culture

Astrology has had a profound influence over the past few thousand years on Western and Eastern cultures. In the middle ages, when even the learned of the time believed in astrology, the system of heavenly spheres and bodies was believed to reflect on the system of knowledge and the world itself below.

Language

Influenza, from Medieval Latin influentia meaning influence, was so named because doctors once believed epidemics to be caused by unfavorable planetary and stellar influences. The word "disaster" comes from the Latin "dis-aster" meaning "bad star". Also, the adjectives "lunatic" (Moon), "mercurial" (Mercury), "martial" (Mars), "jovial" (Jupiter/Jove), and "saturnine" (Saturn) are all old words used to describe personal qualities said to resemble or be highly influenced by the astrological characteristics of the planet, some of which are derived from the attributes of the ancient Roman gods they are named after. More information about planetary linguistics can be found on this site.

Astrology as a descriptive language for the mind

Different astrological traditions are dependent on a particular culture's prevailing mythology. These varied mythologies naturally reflect the culture(s) they emerge from. Images from these mythological systems are usually understandable to natives of the culture they are a part of. Most classicists think that Western astrology is dependent on Greek mythology.

Many writers, notably William Shakespeare, used astrological symbolism to add subtlety and nuance to the description of their characters' motivation(s). An understanding of astrological symbolism is needed to fully appreciate such literature. Some modern thinkers, notably Carl Jung, believe in its descriptive powers regarding the mind without necessarily subscribing to its predictive claims. Consequently, some look at astrology as a way of learning about one self and one's motivations. Increasingly, psychologists and historians have become interested in Jung's theory of the fundamentality and indissolubility of archetypes in the human mind and their correlation with the symbols of the horoscope.

Western astrology and alchemy

Alchemy in the Western World and other locations where it was widely practiced was (and in many cases still is) closely allied and intertwined with traditional Babylonian-Greek style astrology; in numerous ways they were built to complement each other in the search for hidden knowledge. Astrology has used the concept of classical elements from antiquity up until the present. Most modern astrologers use the four classical elements extensively, and indeed it is still viewed as a critical part of interpreting the astrological chart. Traditionally, each of the seven planets in the solar system as known to the ancients was associated with, held dominion over, and ruled a certain metal. See also: Astrology and the classical elements

The seven liberal arts and Western astrology

In medieval Europe, a university education was divided into seven distinct areas, each represented by a particular planet and known as the Seven Liberal Arts.

Dante Alighieri speculated that these arts, which grew into the sciences we know today, fitted the same structure as the planets. As the arts were seen as operating in ascending order, so were the planets and so Grammar was assigned to the quickest moving celestial body (the Moon) and so on, culminating in Astronomia which was thought to be astrologically ruled by Saturn, the slowest moving and furthest out planet known at the time. After this sequence wisdom was supposed to have been achieved by the medieval university student.

See also

Notes and references

1. David Pingree - From Astral Omens to Astrology from Babylon to Bikaner, Roma: Istituto Italiano per L'Africa e L'Oriente, 1997. Pg. 26.
2. Nick Kollerstrom, How Ertel Rescued the Gauquelin Effect?
3. Maggie Hyde, Jung and Astrology. The Aquarian Press (London, 1992) p. 24-26.
4. Geoffrey Cornelius, The Moment of Astrology. The Wessex Astrologer (Bournemouth, 2003.)
5. The Skeptic Dictionary's entry on astrology
6. Activities With Astrology
7. Astrology or Star Struck
8. Bad Astronomy: Astrology
9. http://www.skepsis.nl/astrot.html Rob Nanninga -"The Astrotest" - Correlation, Northern Winter 1996/97, 15(2), p. 14-20.
10. http://psychicinvestigator.com/demo/AstroSkc.htm Skeptical Studies in Astrology, report of Shawn Carlson's double-blind test of astrology published in Nature (December 5, 1985).
11. Is Astrology relevant to conciousness and Psi?
12. Bart Bok, Paul Kurtz and Lawrence Jerome, "Objections to Astrology: A Statement by 186 Leading Scientists" in The Humanist September/October, 1975. See http://www.americanhumanist.org/about/astrology.html for complete text.
13. http://www.imprint.co.uk/pdf/Dean.pdf Geoffrey Dean and Ivan W. Kelly, Is Astrology Relevant to Consciousness and Psi? , Journal of Consciousness Studies, 10, No. 6–7, 2003, pp. 175–198 PDF
14. http://www.chartplanet.com/html/shakespeare.html
15. Hyde, op. cit.
16. Richard Tarnas. Cosmos and Psyche(see more information in Further Reader below.)

Further reading

• Robert Hand, Horoscope Symbols. Schiffer Publications (Altgen, PA; March 1987) ISBN 0914918168. One of the most thoughtful and authoritative books on astrological technique.
• Garry Phillipson, Astrology in the Year Zero. Flare Publications (London, 2000) ISBN 0953026191. A balanced overview of thirty opinions on the validity of astrology, including skeptics.
• Richard Tarnas, Cosmos and Psyche: Intimations of a New World View. viking. (New York, 2006.) ISBN 0670032921.
• Benson Broderick, The Fated Sky: Astrology in History. Simon and Schuster (New York, 2006) ISBN 780743224826. A comprehensive history of astrology covering its origins in Mesopotamia, its influence on western history and the history of ideas through to its controversial place in modern culture.

External links

General

• Over a thousand astrology sites listed at the Open Directory project
• Astrology Bookmarks Share describe and tag your favorite astrology links

History

• Skyscript — Classical Astrology - A modern yet faithful look at Classical astrology.
• Astrology: Between Religion and the Empirical - A serious academic treatise on astrology by Dr. Gustav-Adolf Schoener and translated by Shane Denson.
• History of Astrology in the Renaissance Series of articles on astrology and its influence in the Renaissance.
• Hellenistic Astrology - An Internet Encyclopedia of Philosophy entry outlining the development of Hellenistic astrology and its interaction with philosophical schools.
• The real romance in the stars - A critical view of astrology by Richard Dawkins.
• Astrologia - Article in Smith's Dictionary of Greek and Roman Antiquities
• The Scientific Basis of Astrology, Dr Percy Seymour - Book Review.
• The Astrological Star Of Bethlehem - How the Magi (astrologers) knew of the birth of Christ
• The Devolution and Evolution of Astrology - Article by American mystic Manly Palmer Hall
• Towards a Post-Modern Astrology - Article by Robert Hand
• Astrology & Astronomy in Chaucer's Time - Information from Harvard University

Schools

• Kepler College of Astrological Arts and Sciences - Based in Seattle, USA, Kepler College is the only college in the western hemisphere authorized to issue A.A., B.A., and M.A degrees in Astrological Studies.
• The Sophia Centre Based near Bath, England, the Centre is a department of School of Historical and Cultural Studies at Bath Spa University College. Funded by the Sophia Trust, the Centre teaches an innovative MA in Cultural Astronomy and Astrology and supervises postgraduate research.
• Faculty of Astrological Studies - Founded on 7th June 1948 in London, England at 19.50 BST; its Diploma, the D.F.Astrol.S., is among the most highly valued and recognised international qualifications.
• Astrology College Founded 2002

Objective validity

• Astrofaces Research Project The Astrofaces project seeks to verify astrology with photographs grouped by the sun, moon and ascendant signs. Do people who share the three most prominent factors in the chart resemble each other?
• Astrology and Science - A series of articles in which believers and skeptics debate the merits of astrology.
• The Astrotest - An account of a test of the predictive power of astrology, with references to some other experiments.
• The True Disbelievers by Richard Kamann and Marcello Truzzi is a report of alleged internal events at CSICOP regarding their own claimed confirmation of M. Gauquelin's 'Mars Effect'
• The Skeptic's Dictionary on astrology and the Mars effect
• An Astrophysicist's Sympathetic and Critical View of Astrology - by Victor Mansfield.
• Proof of Astrology? - A critical look at Percy Seymour's books.
• The Magus of Magnetism: How Planetary Motion Orchestrates Solar Activity and Geomagnetism - An interview with Percy Seymour by Bronwyn Elko.
• The Humanist - 1975 astrology article.

Comparison with other thought systems

• Astrology, the Zodiac, Horoscopes and Planetary Alignment.
• Is Astrology A Pseudoscience?
• Academic Journal of Consciousness Studies: Is Astrology Relevant to Consciousness and Psi?
• The Historical Foundations of Astrology
• Dane Rudhyar Archival Project -- Wholeness, Music, Astrology, Theosophy, Art, etc.
• Robert Zoller -- Medieval Astrology
• Noel Tyl -- Contemporary Astrology
• Current Trends in Astrology
• A Comprehensive Uranian Astrology Website
• Sabian Symbols (originated by Marc Edmund Jones and Elsie Wheeler)
• Astrology in Ancient History
• Environmental Cosmology - Astrology theory compared to similar models in the social sciences

Tools

• Astrolabe Software - Calculate your personal natal chart or any astrological chart for free using this simple online calculation form.
• A Comprehensive Astrological Dictionary -- Use this to look up many common astrological terms, both in ancient and modern astrology.
• Astrolog 5.40 - Home of the freeware astrology program Astrolog 5.40.
• Astrolog32 - Home of the freeware astrology program Astrolog32.
• Astrology for Windows Public domain astrology software.
• The Original 3,000 Year High-Precision Daily Astrological Online Ephemeris from Khaldea.com -- 600BC to 2400AD -- Calculated for Midnight GMT; also with an Aspectarian included for years 1900 to 2005
• Classical Use of the Astrological Aspects - Learn all about the astrological aspects at this site.
• Astrowin - Free Astrology Calculation Programs - Astro123, AstroWin, MatchMkr, and more.
• ChronosXP - Free Planetary Hours software for Windows
• Classical Astrology Archives
• Astrology software - Programs for making horoscopes.
• ephemeral.info Tools - Many free web-based tools for looking up information about various celestial objects.
• RFIntrep, RFAstro, RF ACSS & RF PHour - Free software & online free Rosicrucian Astrology book library
• Astrological Articles Open Postings - Open Community Knowledge Base for astrologers to submit articles on astrological related subjects.
• Astrological Dictionary & Glossary - Hundreds of specialized astrological terms are accurately explicated here.
• Relationships Analyst
• Astrology & Enneagram

Western astrology natal reports

• http://www.astro.com/ -- Astrodienst (available in 8 languages)
• http://www.stariq.com/ -- StarIQ.com, Modern Astrology
• http://www.widgetsworld.co.uk/
• http://www.astrologie-info.com/ -- Astrology Info: Natal chart in graphic/text mode and Interactive Moon calendar
• http://www.risingpisces.com/ -- Learn Astrology, Online Astrology Charts and Reports

Natal reports for other systems

• http://www.lunarcal.org
• http://www.suzannewhite.com
• http://www.onereed.com/
• http://www.astrodreamadvisor.com
• http://www.chaosastrology.com/
• Vedic Astrology - Jyotish -- Natal Chart Representation by way of Indian Astrology.

• Astrology
• Divination
• Esoteric cosmology
• Esotericism
• Folklore
• Interdisciplinary fields
• Prediction
• Pseudoscience