All Topics  
Astrology

 

 

 

 

 

Astrology


 
 


Astrology (from Greek: ?st???, ?st???, "star"; and ?????, ?????, "study of") is a group of systemSystem Overview

System is an assemblage of entity/objects, real or abstract, comprising a whole with each and every component/element inte...
s, traditionTradition

The word tradition, comes from the Latin word traditio which means "to hand down" or "to hand over." It is used in a num...
s, and beliefBelief

Belief is usually defined as a conviction of the truth of a proposition without its verification; therefore a belief is a su...
s in which knowledge of the apparent relative positions of celestial bodiesAstronomical object

Astronomical objects are significant physical entities, associations or structures which current science has confirmed to ex...
 and related details is held to be useful in understanding, interpreting, and organizing information about personality, human affairs, and other terrestrial matters. A practitioner of astrology is called an astrologerAstrologer

An astrologer practices one or more forms of astrology....
, or, rarely, an astrologist. Numerous traditions and applications employing astrological concepts have arisen since its earliest recorded beginnings in the 3rd millennium BC. It has played a role in the shaping of culture, early astronomy, and other disciplines throughout history.

Astrology and astronomyAstrology and astronomy

In the modern Western world, astrology and astronomy are generally regarded as completely separate disciplines....
 were often indistinguishable before the modern era, with the desire for predictive and divinatory knowledge one of the primary motivating factors for astronomical observation.






Discussion
Ask a question about 'Astrology'
Start a new discussion about 'Astrology'
Answer questions from other users
Full Discussion Forum






Timeline

1267   Roger Bacon completes his work ''Opus Majus'' and sends it to Pope Clement IV, who had requested it be written; the work contains wide-ranging discussion of mathematics, optics, alchemy, astronomy, astrology, and other topics, and includes what some believe to be the first description of a magnifying glass. Bacon also completes ''Opus Minus'', a summary of ''Opus Majus'', later in the same year.






Encyclopedia




Astrology (from Greek: ?st???, ?st???, "star"; and ?????, ?????, "study of") is a group of systemSystem Overview

System is an assemblage of entity/objects, real or abstract, comprising a whole with each and every component/element inte...
s, traditionTradition

The word tradition, comes from the Latin word traditio which means "to hand down" or "to hand over." It is used in a num...
s, and beliefBelief

Belief is usually defined as a conviction of the truth of a proposition without its verification; therefore a belief is a su...
s in which knowledge of the apparent relative positions of celestial bodiesAstronomical object

Astronomical objects are significant physical entities, associations or structures which current science has confirmed to ex...
 and related details is held to be useful in understanding, interpreting, and organizing information about personality, human affairs, and other terrestrial matters. A practitioner of astrology is called an astrologerAstrologer

An astrologer practices one or more forms of astrology....
, or, rarely, an astrologist. Numerous traditions and applications employing astrological concepts have arisen since its earliest recorded beginnings in the 3rd millennium BC. It has played a role in the shaping of culture, early astronomy, and other disciplines throughout history.

Astrology and astronomyAstrology and astronomy

In the modern Western world, astrology and astronomy are generally regarded as completely separate disciplines....
 were often indistinguishable before the modern era, with the desire for predictive and divinatory knowledge one of the primary motivating factors for astronomical observation. Astronomy began to diverge from astrology after a period of gradual separation from the RenaissanceRenaissance

In the traditional view, the Renaissance was understood as a historical age in Europe that followed the Middle Ages and ...
 up until the 18th century. Eventually, astronomy distinguished itself as the scientificScience

Science in the broadest sense refers to any system of knowledge attained by verifiable means....
 study of astronomical objects and phenomena without regard to the astrological speculation of these phenomena.

Astrology can be defined as the study of the positions of celestial bodies in the belief that their movements either directly influence life on Earth or correspond somehow to events experienced on a human scale. Modern astrologerAstrologer

An astrologer practices one or more forms of astrology....
s define astrology as a symbolic languageSymbolism

Symbolism is the systematic or creative use of arbitrary symbols as abstracted representations of concepts or objects and t...
, an artArt

By its original and broadest definition, art is the product or process of the effective application of a body of knowle...
 form, and a form of divinationDivination

Divination is the attempt of ascertaining information by interpretation of omens or an alleged supernatural agency....
. Despite differences of definitions, a common assumption of astrology is the use of celestial placements in order to explain past and present events and predictFacts About Prediction

A prediction or forecast is a statement or claim that a particular event will occur in the future....
 the future. Generally, the scientific community considers astrology a pseudosciencePseudoscience

A pseudoscience is any body of alleged knowledge, methodology, belief, or practice that claims to be scientific but does not...
 or superstitionSuperstition

A Superstition is the irrational belief that future events are influenced by specific behaviors, without having a causal rel...
. Despite its rejection by scientists, 31% of Americans polled expressed a belief in astrology and 39% considered it scientific according to another study.

Core beliefs


The core beliefs of astrology were prevalent in most of the ancient world and are epitomized in the HermeticHermeticism

Hermeticism is a set of philosophical and religious beliefs based primarily upon the writings attributed to Hermes Trismegis...
 maxim "as above, so below". Tycho BraheTycho Brahe

Tycho Brahe , born Tyge Ottesen Brahe , was a Danish nobleman best known today as an early astronomer, though in his...
 used a similar phrase to summarize 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 once generally held in most traditions of astrology around the world, in the West there has historically been a debate among astrologers over the nature of the mechanism behind astrology. The debate also covers 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.

Although the connection between celestial mechanicsCelestial mechanics

Celestial mechanics is a division of astronomy dealing with the motions and gravitational effects of celestial objects....
 and terrestrial dynamicsDynamics (mechanics)

In physics, dynamics is the branch of classical mechanics that is concerned with the effects of forces on the motion of obje...
 was explored first by Isaac NewtonIsaac Newton

[[[Old Style and New Style dates|OS]]: [[25 December]] [[1642]] [[20 March]] [[1727]]] was an [[England|English]] [[physics|physicist,]]...
 with his development of a universal theory of gravitationGravitation

In physics, gravitation or gravity is the tendency of objects with mass to accelerate toward each other....
, claims that the gravitational effects of the celestial bodies are what accounts for astrological generalizations are not substantiated by scientific research, nor are they advocated by most astrologers.

Most astrological traditions are based on the relative positions and movements of various real or construed celestial bodies and on the construction of implied or calculated celestial patterns as seen at the time and place of the event being studied. These are chiefly the astrological planetsPlanets in astrology Overview

In astrology, planet differs from its modern usage....
, dwarf planets, the asteroids, the starStar

A star is a massive, compact body of plasma in outer space that is held together by its own gravity and, unlike a planet, is...
s, the lunar nodeLunar node Overview

The lunar nodes are the orbital nodes of the Moon, that is, the points where the orbit of the Moon crosses the ecliptic....
s, Arabic parts and hypothetical planetsHypothetical planetary object (non-scientific)

There are a number of planets or planetary bodies whose existence is not supported by scientific evidence, but which are occasiona...
. The frame of reference for such apparent positions is defined by the tropicalTropical Astrology

Tropical Astrology is a type of astrology based on a zodiac whose points of reference are the tropics....
 or siderealSidereal astrology

Sidereal astrology is the system of astrology used by some western and all Jyotish astrologers which bases their interpretat...
 zodiacZodiac

The term zodiac denotes several places where a circle of twelve animals occurs....
 of twelve signsAstrological sign Overview

Both Western and Vedic astrology employ a zodiac which divides the ecliptic into twelve astrological signs of equal length....
 on one hand, and by the local horizonHorizon Summary

The horizon is the line that separates earth from sky....
|descendant]] axis) and midheavenMidheaven

Ptolemy's definition: The Medium Coeli is the point which is upper square from ascendant, eg....
-imum coeliImum Coeli

In astrology, the Imum Coeli, IC, is the point in space where the ecliptic crosses the meridian in the north, exactly ...
 axis on the other. This latter (local) frame is typically further divided into the twelve astrological housesHouse (astrology)

Most Western astrological systems divide the horoscope into a number of houses whose positions depend on time and location r...
. Furthermore, the astrological aspects are used to determine the geometric/angular relationship(s) between the various celestial bodies and angles in the horoscope.

The claim of astrology to predict future trends and developments, or predictive astrology, is based on two main methods: astrological transitAstrological transit Summary

Astrological transitsWhen looking for transits, it very important to consider the house involved, sign and aspects involved...
s and astrological progressionAstrological progression

Astrological progressions are one of the main means used in Horoscopic astrology to forecast future trends and developments ...
s. In astrological transits the ongoing movements of the planets are interpreted for their significance as they transit through space and the horoscope. In astrological progressions the horoscope is progressed forward in time according to set methods. Most modern astrologers no longer try to forecast actual events, but focus instead on general trends and developments. Skeptics respond that this allows astrologers to avoid making verifiable predictions, and gives them the ability to attach significance to arbitrary and unrelated events, in a way that suits their purpose.

In the past, astrologers often relied on close observation of celestial objects and the charting of their movements. Modern astrologers use data provided by astronomerAstronomer

An astronomer or astrophysicist is a person whose area of interest is astronomy or astrophysics....
s which are transformed to a set of astrological tables called ephemeridesEphemeris

An ephemeris was, traditionally, a table providing the positions, of the Sun, the Moon, the planets, asteroids or comets in ...
, showing the changing zodiacal positions of the heavenly bodies through time.

Traditions


There are many traditions of astrology, some of which share similar features due to the transmission of astrological doctrines between cultures. Other traditions developed in isolation and hold different doctrines, though they too share some features due to drawing on similar astronomical sources.

Current traditions

The main traditions used by modern astrologers are:

  • Vedic astrology
  • Western astrologyWestern astrology

    Western astrology is the system of astrology most popular in Western countries....
  • Chinese astrologyChinese astrology

    Chinese astrology is the divination of the future from the Chinese calendar, particularly its 12-year cycle of animals, refe...



Vedic and Western astrology share a common ancestry as horoscopic systemsHoroscopic astrology

Horoscopic astrology is a form of astrology which uses a horoscope or chart to gain information from the positio...
 of astrology, in that both traditions focus on the casting of an astrological chart or horoscopeHoroscope

In astrology, a horoscope is a chart or diagram representing the positions of the planets, other celestial bodies, and sensi...
, a representation of celestial entities, for an event based on the position of the Sun, Moon, and planets at the moment of the event. However, Vedic astrology uses the sidereal zodiac, linking the signs of the zodiac to their original constellationConstellation

A constellation is any one of the 88 areas into which the sky - or the celestial sphere - is divided....
s, while Western astrology uses the tropical zodiac. Because of the precession of the equinoxesPrecession of the equinoxes

The precession of the equinoxes refers to the precession of Earth's axis of rotation with respect to inertial space....
, over the centuries the twelve zodiacal signs in Western astrology no longer correspond to the same part of the sky as their original constellations. In effect, in Western astrology the link between sign and constellation has been broken, whereas in Vedic astrology it remains of paramount importance. Other differences between the two traditions include the use of 27 (or 28) nakshatraNakshatra

A nakshatra or lunar mansion is one of the 27 or 28 divisions of the sky, identified by the prominient star in them, t...
s or lunar mansions, which have been used in India since Vedic times, and the system of planetary periods known as dashasDasha (astrology) Overview

A Dasha is a planetary period in Jyotisha, the classical system of astrology in India....
.

In Chinese astrology a quite different tradition has evolved. By contrast to Western and Indian astrology, the twelve signs of the zodiac do not divide the sky, but rather the celestial equator. The Chinese evolved a system where each sign corresponds to one of twelve 'double-hours' that govern the day, and to one of the twelve months. Each sign of the zodiac governs a different year, and combines with a system based on the five elements of Chinese cosmology to give a 60 (12 x 5) year cycle. The term Chinese astrology is used here for convenience, but it must be recognised that versions of the same tradition exist in KoreaKorea Summary

KoreaOne of the world's oldest civilizations, Korea began with the founding of Gojoseon in 2333 BC, according to the Dangun...
, JapanJapan

is an island country in East Asia. Located in the Pacific Ocean, it lies to the east of China, Korea, and Russia, stretching from...
, VietnamVietnam

Vietnam, officially the Socialist Republic of Vietnam, is a country in Southeast Asia....
, ThailandThailand

The Kingdom of Thailand is a country in Southeast Asia, bordering Laos and Cambodia to the east, the Gulf of Thailand and Ma...
 and other Asian countries.

In modern times, these traditions have come into greater contact with each other, notably with Indian and Chinese astrology having spread to the West, while awareness of Western astrology is still fairly limited in Asia.
Astrology in the Western world has diversified greatly in modern times. New movements have appeared, which have jettisoned much of traditional astrology to concentrate on different approaches, such as a greater emphasis on midpoints, or a more psychological approach. Some recent Western developments include:

  • Modern tropical and sidereal horoscopic astrology
  • CosmobiologyCosmobiology

    The school of astrology known as Cosmobiology was founded in the late 1930s by a German astrologer named Reinhold Ebertin wh...
  • Psychological astrologyPsychological astrology

    Psychological Astrology, Astrological Psychology or Astropsychology is a recent product of the cross-fertilisati...
  • Sun sign astrologySun sign astrology

    Sun-sign astrology is the form of astrology most commonly found in many newspaper and magazine columns....
  • Hamburg School of AstrologyHamburg School of Astrology

    The Hamburg School of Astrology originated in Hamburg, Germany, and revolved around the research and teachings of surveyor/a...
    • Uranian astrologyUranian astrology

      Uranian Astrology is a modern form of astrology based on teachings of German surveyor/astrologer Alfred Witte, founder of th...
      , subset of the Hamburg School

Historical traditions

Throughout its long history, astrology has come to prominence in many regions and undergone developments and change. There are many astrological traditions that are historically important, but which have largely fallen out of use today. Astrologers still retain an interest in them and regard them as an important resource. Historically significant traditions of astrology include:
  • Arab and Persian astrologyArab and Persian astrology

    Persian Astrology has its roots in the Zend-Avesta, parts of which are very similar to the Rig Veda....
     (Medieval, near East)
  • Babylonian astrologyBabylonian astrology

    In Babylonia as well as in Assyria as a direct offshoot of Babylonian culture, astrology takes its place in the...
     (Ancient, near East)
  • Egyptian astrologyEgyptian astrology

    Classical astrology in Egypt only developed after it was conquered by Alexander the Great. ...
  • Hellenistic astrologyHellenistic astrology

    Hellenistic astrology is a tradition of horoscopic astrology that was developed and practiced in Hellenistic Egypt and the M...
     (Classical antiquity)
  • Mayan astrology


The history of Western, Chinese, and Indian astrology is discussed in the main article history of astrologyHistory of astrology

The History of astrology encompasses a great span of human history and many cultures....
.

Esoteric traditions


Many mystic or esoteric traditions have links to astrology. In some cases, like KabbalahKabbalah

Kabbalah literally means a "receiving", in the sense of a "received tradition"....
, this involves participants incorporating elements of astrology into their own traditions. In other cases, like divinatory tarot, many astrologers themselves have incorporated the tradition into their own practice of astrology. Esoteric traditions include, but are not limited to:

  • AlchemyClassical planets in western alchemy

    Alchemy in the Western World and other locations where it was widely practiced was closely allied and intertwined with traditional...
  • ChiromancyChiromancy

    Chiromancy or cheiromancy,, is the art of characterization and foretelling the future through the study of the palm, a...
  • Kabbalistic astrologyFacts About Kabbalistic astrology

    Kabbalistic astrology or Mazal, Mazalot is astrology based upon the Hebrew Kabbalah to interpret and delineate a person's bi...
  • Medical astrologyMedical astrology

    Medical astrology is an ancient medical system that associates various parts of the body, diseases and drugs as under the in...
  • NumerologyAstrology and numerology

    Some astrologers believe that each number from 0 to 9 is ruled by a celestial body in our solar system -- the layout below is the ...
  • RosicrucianFacts About Rosicrucian

    The Rosicrucian Order is a legendary and secretive Order publicly documented in the early 17th century....
     or "Rose Cross"
  • Tarot divination


Historically, alchemy in the Western WorldWestern world

The term Western World or "the West" can have multiple meanings depending on its context....
 was particularly allied and intertwined with traditional Babylonian-Greek style astrology; in numerous ways they were built to complement each other in the search for occultOccult

The word occult comes from the Latin occultus , referring to the 'knowledge of the secret' or 'knowledge of the hidden' ...
 or hidden knowledge. Astrology has used the concept of the four classical elementsAstrology and the classical elements

Astrology has used the concept of classical elements from antiquity up until the present....
 of alchemy from antiquity up until the present day. Traditionally, each of the seven planets in the solar system known to the ancients was associated with, held dominion over, and "ruled" a certain metal.

The zodiac



The zodiac is the belt or band of constellations through which the Sun, Moon, and planets transit across the sky. Astrologers noted these constellations and so attached a particular significance to them. Over time they developed the system of twelve signsAstrological sign

Both Western and Vedic astrology employ a zodiac which divides the ecliptic into twelve astrological signs of equal length....
 of the zodiac|Aries]], TaurusTaurus (astrology)

Taurus is an astrological sign, which is associated with the constellation of the same name....
, GeminiGemini (astrology)

Gemini is an astrological sign, which is associated with the constellation Gemini....
, CancerCancer (astrology)

Cancer is an astrological sign, which is associated with the constellation Cancer....
, LeoLeo (astrology)

Leo is an astrological sign, which is associated with the constellation Leo....
, VirgoVirgo (astrology) Overview

Virgo is an astrological sign, which is associated with the constellation Virgo....
, LibraLibra (astrology)

Libra is an astrological sign, which is associated with the constellation Libra....
, ScorpioScorpio (astrology) Summary

Scorpio is an astrological sign, which is associated with the constellation Scorpius....
, SagittariusSagittarius (astrology)

Sagittarius is an astrological sign, which is associated with the constellation Sagittarius....
, CapricornCapricorn (astrology)

Capricorn is an astrological sign, which is associated with the constellation Capricornus....
, AquariusAquarius (astrology)

Aquarius is an astrological sign, which is associated with the constellation Aquarius....
, and PiscesPisces (astrology)

Pisces is an astrological sign, which is associated with the constellation Pisces....
), based on twelve of the constellations they considered to be particularly important. The Western and Vedic zodiac signs have a common origin in the tradition of horoscopic astrology, and so are very similar in meaning. In China on the other hand, the development of the zodiac was different. Although the Chinese too have a system of twelve signs (named after animals), the Chinese zodiac refers to a pure calendrical cycle, as there are no equivalent constellations linked to it like the Western or Indian zodiacs. The common choice of twelve zodiac signs is understandable considering the interaction of the Sun and Moon was central to all forms of astrology.

The majority of Western astrologers base their work on the tropical zodiac which divides the sky into twelve equal segments of 30 degrees each, beginning with the first point of Aries, the point where the line of the earth's celestial equatorCelestial equator

The celestial equator is a great circle on the imaginary celestial sphere, which is actually the plane of the terrestrial eq...
 and the eclipticEcliptic

The ecliptic is the apparent path the Sun traces out along the sky — independent of Earth's rotation — in the co...
 (the Sun's path through the sky) meet at the northern hemisphere spring equinoxEquinox

An equinox in astronomy is the moment when the Sun can be observed to be directly above the equator....
. Due to the precession of the equinoxesFacts About Precession of the equinoxes

The precession of the equinoxes refers to the precession of Earth's axis of rotation with respect to inertial space....
, the slow changing of the way Earth rotates in space, the zodiacal signs in this system bear no relation to the constellationFacts About Constellation

A constellation is any one of the 88 areas into which the sky - or the celestial sphere - is divided....
s of the same name but stay aligned to the months and seasons.

Practitioners of the Vedic astrological tradition and a minority of Western astrologers use the sidereal zodiac. This zodiac uses the same evenly divided ecliptic but approximately stays aligned to the positions of the observable constellations with the same name as the zodiacal signs. The sidereal zodiac differs from the tropical zodiac by an offset called the ayanamsaAyanamsa

Ayanamsa is the sanskrit term for the longitudinal difference between the tropical or Sayana and sidereal or Nirayana zodiac...
, which steadily increases as the equinoxes drift further. Furthermore, some siderealists (i.e. astrologers employing sidereal techniques) use the actual, unequal constellations of the zodiac in their work.

Horoscopic astrology


Horoscopic astrologyHoroscopic astrology

Horoscopic astrology is a form of astrology which uses a horoscope or chart to gain information from the positio...
 is a system that was developed in the MediterraneanMediterranean Basin

The Mediterranean Basin refers to the lands around and surrounded by the Mediterranean Sea....
 region and specifically Hellenistic Egypt around the late 2nd or early 1st century BCE. The tradition deals with two-dimensional diagrams of the heavens, or horoscopes, created for specific moments in time. The diagram is then used to interpret the inherent meaning underlying the alignment of celestial bodies at that moment based on a specific set of rules and guidelines. A horoscope was calculated normally for the moment of an individual's birth, or at the beginning of an enterprise or event, because the alignments of the heavens at that moment were thought to determine the nature of the subject in question. 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 eclipticEcliptic

The ecliptic is the apparent path the Sun traces out along the sky — independent of Earth's rotation — in the co...
 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 AfricaAfrica

Africa is one of the greatest sized continents of the Earth....
, IndiaIndia

India , officially the Republic of India, is a country in South Asia....
, EuropeEurope

Europe is one of the seven traditional continents of the Earth....
, and the Middle EastMiddle East Overview

The Middle East is a subcontinent for the historical and cultural subregion of Africa-Eurasia traditionally held to be count...
, and there are several major traditions of horoscopic astrology whose origins are Hellenistic, including Indian, Medieval, and most other modern Western traditions of astrology.

The horoscope


Central to horoscopic astrology and its branches is the calculation of the horoscope or astrological chart. This two-dimensional diagrammatic representation shows the celestial bodies' apparent positions in the heavens from the vantage of a location on Earth at a given time and place. The horoscope is also divided into twelve different celestial houses which govern different areas of life. Calculations performed in casting a horoscope involve arithmeticArithmetic

Arithmetic or arithmetics is the oldest and simplest branch of mathematics, used by almost everyone, for tasks rangin...
 and simple geometryGeometry

Geometry arose as the field of knowledge dealing with spatial relationships....
 which serve to locate the apparent position of heavenly bodies on desired dates and times based on astronomical tables. In ancient Hellenistic astrology the ascendant demarcated the first celestial house of a horoscope. The word for the ascendant in Greek was horoskopos from which horoscope derives. In modern times, the word has come to refer to the astrological chart as a whole.

Branches of horoscopic astrology

Traditions of horoscopic astrology can be divided into four branches which are directed towards specific subjects or purposes. Often these branches use 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 these four fundamental branches.

  • Natal astrologyNatal astrology

    Natal astrology, also known as Genethliacal astrology, is the system of astrology based upon the concept that each individua...
    , the study of a person's natal chart to gain information about the individual and his/her life experience.
  • Katarchic astrologyKatarchic astrology

    Katarchic astrology is the application of horoscopic astrology to determine an auspicious moment to begin a venture or under...
    , which includes both electionalElectional astrology

    Electional astrologyElection is a procedurally selected, one of the most appropriate, auspicious & precise time, to initiat...
     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 astrologyHorary astrology

    Horary astrology is an ancient branch of horoscopic astrology by which an astrologer attempts to answer a question by constr...
    , used to answer a specific question by studying the chart of the moment the question is posed to an astrologer.
  • Mundane or world astrologyMundane astrology Summary

    Mundane Astrology is the application of astrology to world affairs and world events, taking its name from the Roman word M...
    , the application of astrology to world events, including weather, earthquakes, and the rise and fall of empires or religions. This includes the Astrological Ages, such as the Age of AquariusAge of Aquarius

    This article is about the astrological time period....
    , Age of Pisces and so on. Each age is about 2,150 years in length and many people believe these massive ages correspond to major historical events and current developments in the world

History of astrology


Origins

The origins of much of the astrological doctrine and method that would later develop in AsiaAsia

Asia is the largest and most populous continent or region, depending on the definition....
, EuropeEurope

Europe is one of the seven traditional continents of the Earth....
, and the Middle EastMiddle East Summary

The Middle East is a subcontinent for the historical and cultural subregion of Africa-Eurasia traditionally held to be count...
 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 and Assyrians to other areas such as IndiaIndia Overview

India , officially the Republic of India, is a country in South Asia....
, Middle EastMiddle East Overview

The Middle East is a subcontinent for the historical and cultural subregion of Africa-Eurasia traditionally held to be count...
, and GreeceGreece

GreeceGreece lies at the juncture of Europe, Asia, and Africa....
 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 conquestsAlexander the Great

Alexander the Great , also known as Alexander III, king of Macedon , was one of the most successful military commander...
, this Babylonian astrology was mixed with the Egyptian tradition of decanic astrology to create horoscopic astrologyHoroscopic astrology

Horoscopic astrology is a form of astrology which uses a horoscope or chart to gain information from the positio...
. This new form of astrology, which appears to have originated in Alexandrian EgyptAlexandria

Alexandria , , is the second-largest city in Egypt, and its largest seaport....
, quickly spread across the ancient world into Europe, the Middle East and India.

Before the modern era

From the classical period through the scientific revolutionScientific revolution Overview

The event which most historians of science call the scientific revolution can be dated roughly as having begun in 1543, the ...
, astrological training played a critical role in advancing astronomical, mathematical, medical and psychological knowledge. Astrological influences included the observation and long-term tracking of celestial objects. It was astrologers who provided the first systematic documentation of the movements of the Sun, the Moon, the planets, and the stars. The differentiation between astronomy and astrology varied from place to place; they were indistinguishable in ancient Babylonia and medieval EuropeMiddle Ages

The Middle Ages formed the middle period in a traditional schematic division of European history into three "ages": the clas...
, but separated to an extent in the Hellenistic worldHellenistic civilization

The term Hellenistic was established by the German historian Johann Gustav Droysen to refer to the spreading of Greek cultu...
. The first semanticSemantics

Semantics refers to the aspects of meaning that are expressed in a language, code, or other form of representation....
 distinction between astrology and astronomyAstrology and astronomy

In the modern Western world, astrology and astronomy are generally regarded as completely separate disciplines....
 was given in the 11th century by the Persian astronomerIslamic astronomy Overview

In its origins and development, Islamic astronomy closely parallels the genesis of other Islamic sciences in its assimilation of f...
, Abu Rayhan al-Biruni (see astrology and astronomyAstrology and astronomy Overview

In the modern Western world, astrology and astronomy are generally regarded as completely separate disciplines....
).

The pattern of astronomical knowledge gained from astrological endeavours has been historically repeated across numerous cultures, from ancient IndiaHistory of India

The history of India can be traced in fragments to as far back as 9500 years ago....
 through the classical Maya civilization to medieval Europe. Given this historical contribution, astrology has been called a protoscienceProtoscience

Protoscience is a field of study that appears to conform to the initial phase of the scientific method, with information gat...
 along with pseudosciencePseudoscience

A pseudoscience is any body of alleged knowledge, methodology, belief, or practice that claims to be scientific but does not...
s such as alchemyAlchemy

Alchemy refers to both an early form of the investigation of nature and an early philosophical and spiritual discipline, bot...
 (see "Western astrology and alchemy" below).

Astrology was not always uncritically accepted before the modern era; it was often challenged by Hellenistic skeptics, church authorities, and medieval Muslim astronomersIslamic astronomy

In its origins and development, Islamic astronomy closely parallels the genesis of other Islamic sciences in its assimilation of f...
, such as Al-FarabiAl-Farabi Overview

Abu Nasr Muhammad ibn al-Farakh al-Farabi or Abu Nasr al-Farabi , also known in the West as Alpharabius, Al-F...
 (Alpharabius), Ibn al-Haytham (Alhazen), Abu Rayhan al-Biruni, AvicennaFacts About Avicenna

Ibn Sina or Avicenna was a Persian physician, philosopher, and scientist who was born in 980 as the author of 450 bo...
 and AverroesAverroes

Ibn Rushd, known as Averroes , was an Andalusian-Arab philosopher and physician, a master of philosophy and Islamic la...
. Their reasons for refuting astrology were often due to both scientific (the methods used by astrologers being conjectural rather than empiricalEmpirical

A central concept in science and the scientific method is that all evidence must be empirical, or empirically based, t...
) and religious (conflicts with orthodox Islamic scholarsUlema

Ulema refers to the educated class of Muslim scholars engaged in the several fields of Islamic studies....
) reasons. Ibn Qayyim Al-Jawziyya (1292-1350), in his Miftah Dar al-SaCadah, used empirical arguments in astronomy in order to refute astrology and divinationDivination

Divination is the attempt of ascertaining information by interpretation of omens or an alleged supernatural agency....
.

Many prominent thinkers, philosophers and scientists, such as PythagorasPythagoras

Pythagoras of Samos was an Ionian mathematician and philosopher, founder of the mystic, religious and scientific society c...
, PlatoPlato

Plato , whose real name is believed to have been Aristocles, was an immensely influential ancient Greek philosopher, ...
, AristotleAristotle

Aristotle was an ancient Greek philosopher, a student of Plato and teacher of Alexander the Great....
, GalenGalen

Greek: Ga?????, Latin: Claudius Galenus of Pergamum , better known in English as Galen, was an ancient Greek phy...
, ParacelsusParacelsus

Paracelsus was an alchemist, physician, astrologer, and general occultist....
, Girolamo Cardan, Nicholas Copernicus, Taqi al-DinTaqi al-Din

Taqi al-Din Muhammad ibn Ma'ruf al-Shami al-Asadi was a major Muslim scientist....
, Tycho BraheTycho Brahe

Tycho Brahe , born Tyge Ottesen Brahe , was a Danish nobleman best known today as an early astronomer, though in his...
, Galileo GalileiGalileo Galilei

Galileo Galilei was an Italian physicist, astronomer, astrologer and philosopher who is closely associated with the scienti...
, Johannes KeplerJohannes Kepler

Johannes Kepler , a key figure in the scientific revolution, was a German mathematician, astronomer, astrologer, and an earl...
, Carl JungCarl Jung

Carl Gustav Jung was a Swiss psychiatrist and founder of analytical psychology....
 and others, practiced or significantly contributed to astrology.

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 the educated 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.

Astrology has had an influence on both language and literature. For example, influenzaInfluenza

Influenza, commonly known as the flu, is an infectious disease that infects birds and mammals and is caused by an RNA...
, 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 Italian disastro, derived from the negative prefix dis- and from Latin aster "star", thus meaning "ill-starred". Adjectives "lunatic" (Luna/MoonMoon

The Moon is Earth's only natural satellite....
), "mercurial"|Mercury]]), "venereal", "martial", "jovial", and "saturnine" 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. In literature, many writers, notably Geoffrey ChaucerGeoffrey Chaucer

Geoffrey Chaucer was an English author, poet, philosopher, bureaucrat , and diplomat....
 and William ShakespeareWilliam Shakespeare

William Shakespeare was an English poet and playwright widely regarded as the greatest writer of the English language, as w...
, used astrological symbolism to add subtlety and nuance to the description of their characters' motivation(s). More recently, Michael Ward has proposed that C.S. Lewis imbued his Chronicles of Narnia with the characteristics and symbols of the seven heavens. Often, an understanding of astrological symbolism is needed to fully appreciate such literature.

Some modern thinkers, notably Carl Jung, believe in astrology's descriptive powers regarding the mind without necessarily subscribing to its predictive claims. In education astrology is reflected in the university education of medieval Europe, which was divided into seven distinct areas, each represented by a particular planet and known as the seven liberal artsLiberal arts

The term liberal arts has come to mean studies that are intended to provide general knowledge and intellectual skills, rathe...
. Dante AlighieriDANTE

DANTE is a not-for-profit organisation that plans, builds and operates the international networks that interconnect the var...
 speculated that these arts, which grew into the sciences we know today, fitted the same structure as the planets.
In music the best known example of astrology's influence is in the orchestral suite called "The PlanetsThe Planets

The Planets , opus 32, is a seven-movement orchestral suite by the English composer Gustav Holst, written between 1914 a...
" by the British composer Gustav HolstGustav Holst

Gustav Theodor Holst was an English composer....
, the framework of which is based upon the astrological symbolism of the planets.

Astrology and science




By the time of Francis BaconFrancis Bacon

Francis Bacon, 1st Viscount St Alban, KC was an English philosopher, statesman and essayist but is best known for leading t...
 and the scientific revolution, newly emerging scientific disciplines acquired a method of systematic empirical induction validated by experimental observations, which led to the scientific revolution. At this point, astrology and astronomy began to diverge; astronomy became one of the central sciences while astrology was increasingly viewed as an occult science or superstition by natural scientists. This separation accelerated through the eighteenth and nineteenth centuries.

Astrology is now regarded as unscientific both by scientific bodies and by individual scientists and has been labeled as a pseudosciencePseudoscience

A pseudoscience is any body of alleged knowledge, methodology, belief, or practice that claims to be scientific but does not...
. In 1975, the American Humanist AssociationFacts About American Humanist Association

The American Humanist Association is a American Humanist group serving secular Humanism, but tending to favor Humanism as de...
 published one of the most widely known modern criticisms of astrology, characterizing those who continue to have faith in the subject 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". Astronomer Carl SaganCarl Sagan

Dr. Carl Edward Sagan was an American astronomer, astrobiologist, and highly successful science popularizer....
 found himself unable to sign the statement, not because he felt astrology had any validity at all, but because he found the statement's tone authoritarian. Sagan stated that he would instead have been willing to sign a statement describing and refuting the principal tenets of astrological belief, which he believed would have been far more persuasive and would have produced much less controversy than the circulated statement.

Although astrology has had no scientific standing for some time, it has been the subject of much research among astrologers since the beginning of the twentieth century. In their landmark study of twentieth-century research into natal astrology, astrology critics Geoffrey Dean and coauthors documented this burgeoning research activity, primarily within the astrological community.

Claims about obstacles to research

Astrologers have argued that there are significant obstacles in carrying out scientific research into astrology today, including lack of funding, lack of background in science and statistics by astrologers, and insufficient expertise in astrology by research scientists and skeptics. There are only a handful of journals dealing with scientific research into astrology (i.e. astrological journals directed towards scientific research or scientific journalScientific journal

n academic publishing, a scientific journal is a publication intended to further the progress of science, usually by report...
s publishing astrological research). Some astrologers have argued that few practitioners today pursue scientific testing of astrology because they feel that working with clients on a daily basis provides a personal validation for them.

Another argument made by astrologers is that most studies of astrology do not reflect the nature of astrological practice and that the scientific methodScientific method

Scientific method is a body of techniques for investigating phenomena and acquiring new knowledge, as well as for correcting...
 does not apply to astrology. Some astrology proponents claim that the prevailing attitudes and motives of many opponents of astrology introduce conscious or unconscious bias in the formulation of hypotheses to be tested, the conduct of the tests, and the reporting of results.

Mechanism

As astrologers have been consistently unable to present physical mechanisms for astrology, few modern astrologers believe in a direct causal relationship between heavenly bodies and earthly events. An editorial published by the Astronomical Society of the PacificAstronomical Society of the Pacific

The Astronomical Society of the Pacific was founded in San Francisco in 1889....
 reports that they can find no evidence for a scientifically defined mechanism by which celestial objects can influence terrestrial affairs. Some researchers have posited acausal, purely correlative, relationships between astrological observations and events, such as the theory of synchronicitySynchronicity

Synchronicity is a word coined by the Swiss psychologist Carl Jung to describe the "temporally coincident occurrences of aca...
 proposed by Carl Jung. Others have posited a basis in divinationDivination

Divination is the attempt of ascertaining information by interpretation of omens or an alleged supernatural agency....
. Still others have argued that empirical correlations can stand on their own epistemologicallyEpistemology Overview

Epistemology or theory of knowledge is the branch of philosophy that studies the nature and scope of knowledge....
, and do not need the support of any theory or mechanism. To some observers, these non-mechanistic concepts raise serious questions about the feasibility of validating astrology through scientific testing, and some have gone so far as to reject the applicability of the scientific method to astrology almost entirely. Some astrologers, on the other hand, believe that astrology is amenable to the scientific method, given sufficiently sophisticated analytical methods, and they cite pilot studies they claim support this view. Consequently, several astrologers have called for or advocated continuing studies of astrology based on statistical validation.

Research


Astrology has repeatedly failed to demonstrate its effectiveness in numerous controlled studies. Effect sizeEffect size

Effect size is a measure of the strength of the relationship between two variables....
 studies in astrology conclude that the mean accuracy of astrological predictions is no greater than what is expected by chance, and astrology's perceived performance has disappeared on critical inspection. When testing for cognitive, behavioral, physical and other variables, one study of astrological "time twinsAstro-twin

In astrology, an astro-twin is a pair of people that were born on the same day and whose natal chart/horoscope is consequent...
" showed that human characteristics are not molded by the influence of the Sun, Moon and planets at the time of birth. Skeptics of astrology also suggest that the perceived accuracy of astrological interpretations and descriptions of one's personality can be accounted for by the factConfirmation bias

In psychology and cognitive science, confirmation bias is a tendency to search for or interpret information in a way that co...
 that people tend to exaggerate positive 'hits' and overlook whatever does not fit, especially when vague language is usedForer effect

The Forer effect is the observation that individuals will give high accuracy ratings to descriptions of their personality th...
. They also argue that statistical research is often wrongly seen as evidence for astrology due to uncontrolled artifacts. A large-scale study, with a sample size of about 15,000 "astro-twins", was published in 2006. It examined the relationship between date of birth and individual differences in personality and general intelligence, and found no evidence that a connection existed. It also found no relationship between the zodiacal signs and participants' personal traits.

French psychologist and statistician Michel GauquelinMichel Gauquelin

Michel Gauquelin was a French psychologist and statistician who, along with his first wife Franoise Schneider-Gauquelin, con...
 claimed to have found correlations between some planetary positions and certain human traits such as vocations. Gauquelin's most widely known claim is known as the Mars effectMars effect

The Mars effect is a claim that Mars occupies certain positions in the sky more often at the birth of sports champions than ...
, which is said to demonstrate a correlation between the planet Mars occupying certain positions in the sky more often at the birth of eminent sports champions than at the birth of ordinary people. A similar claim is made by Richard TarnasFacts About Richard Tarnas

Richard Tarnas, author of The Passion of the Western Mind and Cosmos and Psyche, is a cultural historian and profess...
 in his work Cosmos and Psyche, in which he explores correspondences between planetary alignments and historically significant events and individuals.

Since its original publication in 1955, the Mars effect has been the subject of critical studies and skepticalScientific skepticism

Scientific skepticism or rational skepticism sometimes referred to as skeptical inquiry, is a scientific, or pra...
 publications which refute it, and studies in fringe journalsFringe science

Fringe science is a phrase used to describe scientific inquiry in an established field that departs significantly from mains...
 claiming to support or expand the original claims. Gauquelin's research has not received mainstream scientific notice.

The Forer effectForer effect

The Forer effect is the observation that individuals will give high accuracy ratings to descriptions of their personality th...
 is seen in astrology when most people simply accept their horoscopes as custom even if, by logic, it would mean that 1/12 of the world would have the exact same day or week.

See also



  • Astrology and astronomyAstrology and astronomy

    In the modern Western world, astrology and astronomy are generally regarded as completely separate disciplines....
  • Astrology and computersAstrology and computers

    Computers quickly perform planetary and numerical computations that astrologers find useful....
  • Astrological aspectFacts About Astrological aspect

    In astrology, an aspect is the relative angle between two heavenly bodies....
    s
  • Astrological housesHouse (astrology)

    Most Western astrological systems divide the horoscope into a number of houses whose positions depend on time and location r...
  • Astrological signAstrological sign

    Both Western and Vedic astrology employ a zodiac which divides the ecliptic into twelve astrological signs of equal length....
    • ZodiacZodiac

      The term zodiac denotes several places where a circle of twelve animals occurs....
  • Astrological symbolsAstrological symbols

    Astrological symbols are images used in various astrological systems to denote relevant objects....
  • Astrological ageAstrological age Summary

    An astrological age is a time period in astrology which is believed to cause major changes in the Earth's inhabitants develo...