astrologer, astrologist, n.astrological /a'streuh loj"i keuhl/, astrologic, astrologous /euh strol"euh geuhs/, adj.astrologically, adv.
/euh strol"euh jee/, n.
1. the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs.
2. Obs. the science of astronomy.
[1325-75; ME < L astrologia < Gk. See ASTRO-, -LOGY]

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Divination that consists of interpreting the influence of stars and planets on earthly affairs and human destinies.

In ancient times it was inseparable from astronomy. It originated in Mesopotamia (с 3rd millennium BC) and spread to India, but it developed its Western form in Greek civilization during the Hellenistic period. Astrology entered Islamic culture as part of the Greek tradition and was returned to European culture through Arabic learning during the Middle Ages. According to the Greek tradition, the heavens are divided according to the 12 constellations of the zodiac, and the bright stars that rise at intervals cast a spiritual influence over human affairs. Astrology was also important in ancient China, and in imperial times it became standard practice to have a horoscope cast for each newborn child and at all decisive junctures of life. Though the Copernican system shattered the geocentric worldview that astrology requires, interest in astrology has continued into modern times and astrological signs are still widely believed to influence personality.

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 type of divination that involves the forecasting of earthly and human events through the observation and interpretation of the fixed stars, the Sun, the Moon, and the planets. Devotees believe that an understanding of the influence of the planets and stars on earthly affairs allows them to both predict and affect the destinies of individuals, groups, and nations. Though often regarded as a science throughout its history, astrology is widely considered today to be diametrically opposed to the findings and theories of modern Western science.

Nature and significance
      Astrology is a method of predicting mundane events based upon the assumption that the celestial bodies—particularly the planets and the stars considered in their arbitrary combinations or configurations (called constellations)—in some way either determine or indicate changes in the sublunar world. The theoretical basis for this assumption lies historically in Hellenistic philosophy and radically distinguishes astrology from the celestial omina (“omens (omen)”) that were first categorized and cataloged in ancient Mesopotamia. Originally, astrologers presupposed a geocentric universe in which the “planets” (including the Sun and Moon) revolve in orbits whose centres are at or near the centre of the Earth and in which the stars are fixed upon a sphere with a finite radius whose centre is also the centre of the Earth. Later the principles of Aristotelian (Aristotelianism) physics were adopted, according to which there is an absolute division between the eternal, circular motions of the heavenly element and the limited, linear motions of the four sublunar elements: fire, air, water, earth.

      Special relations were believed to exist between particular celestial bodies and their varied motions, configurations with each other, and the processes of generation and decay apparent in the world of fire, air, water, and earth. These relations were sometimes regarded as so complex that no human mind could completely grasp them; thus, the astrologer might be readily excused for any errors. A similar set of special relations was also assumed by those whose physics was more akin to that of the Greek philosopher Plato. For the Platonic (Platonism) astrologers, the element of fire was believed to extend throughout the celestial spheres, and they were more likely than the Aristotelians to believe in the possibility of divine intervention in the natural processes through celestial influences upon the Earth, since they believed in the deity's creation of the celestial bodies themselves.

      The role of the divine (providence) in astrological theory varies considerably. In its most rigorous aspect, astrology postulates a totally mechanistic universe, denying to the deity the possibility of intervention and to man that of free will; as such, it was vigorously attacked by orthodox Christianity and Islam (Islām). For some, however, astrology is not an exact science like astronomy but merely indicates trends and directions that can be altered either by divine or by human will. In the interpretation of Bardesanes, a Syrian Christian scholar (154–c. 222)—who has often been identified as a Gnostic (Gnosticism) (a believer in esoteric salvatory knowledge and the view that matter is evil and spirit good)—the motions of the stars govern only the elemental world, leaving the soul free to choose between the good and the evil. Man's ultimate goal is to attain emancipation from an astrologically dominated material world. Some astrologers, such as the Harranians (from the ancient Mesopotamian city of Harran) and the Hindus (Hinduism), regard the planets themselves as potent deities whose decrees can be changed through supplication and liturgy or through theurgy, the science of persuading the gods or other supernatural powers. In still other interpretations—e.g., that of the Christian Priscillianists (Priscillian) (followers of Priscillian, a Spanish ascetic of the 4th century who apparently held dualistic views)—the stars merely make manifest the will of God to those trained in astrological symbolism.

Significance of astral omens
      The view that the stars make manifest the divine (divination) will is closest to the concept that lies behind the ancient Mesopotamian collections of celestial omens. Their primary purpose was to inform the royal court of impending disaster or success. These might take the forms of meteorological or epidemic phenomena affecting entire human, animal, or plant populations. Frequently, however, they involved the military affairs of the state or the personal lives of the ruler and his family. Since the celestial omina were regarded not as deterministic but rather as indicative—as a kind of symbolic language in which the gods communicated with men about the future and as only a part of a vast array of ominous events—it was believed that their unpleasant forebodings might be mitigated or nullified by ritual means or by contrary omens. The bāru (the official prognosticator), who observed and interpreted the celestial omina, was thus in a position to advise his royal employer on the means of avoiding misfortunes; the omens provided a basis for intelligent action rather than an indication of an inexorable fate.

Purposes of astrology
       Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of life Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of lifeThe original purpose of astrology, on the other hand, was to inform the individual of the course of his life on the basis of the positions of the planets and of the zodiacal (zodiac) signs (the 12 astrological constellations) at the moment of his birth or conception. From this science, called genethlialogy (casting nativities), were developed the fundamental techniques of astrology. The main subdivisions of astrology that developed after genethlialogy are general, catarchic, and interrogatory.

      General astrology studies the relationship of the significant celestial moments (e.g., the times of vernal equinoxes, eclipses, or planetary conjunctions) to social groups, nations, or all of humanity. It answers, by astrological means, questions formerly posed in Mesopotamia to the bāru.

      Catarchic (pertaining to beginnings or sources) astrology determines whether or not a chosen moment is astrologically conducive to the success of a course of action begun in it. Basically in conflict with a rigorous interpretation of genethlialogy, it allows the individual (or corporate body) to act at astrologically favourable times and, thereby, to escape any failures predictable from his (or its) nativity.

      Interrogatory astrology provides answers to a client's queries based on the situation of the heavens at the moment of his posing the questions. This astrological consulting service is even more remote from determinism than is catarchic astrology; it is thereby closer to divination by omens and insists upon the ritual purification and preparation of the astrologer.

      Other forms of astrology, such as iatromathematics (application of astrology to medicine) and military astrology, are variants on one or another of the above.

Historical development

Astral omens in the ancient Middle East (Middle East, ancient)
      The astral omens employed in Mesopotamian divination were later commingled with what came to be known as astrology in the strict sense of the term and constituted within astrology a branch described as natural astrology. Though lunar eclipses apparently were regarded as ominous at a somewhat earlier period, the period of the 1st dynasty of Babylon (18th to 16th centuries BC) was the time when the cuneiform text Enūma Anu Enlil, devoted to celestial omina, was initiated. The final collection and codification of this series, however, was not accomplished before the beginning of the 1st millennium BC. But the tablets that have survived—mainly from the Assyrian library of King Ashurbanipal (7th century BC)—indicate that a standard version never existed. Each copy had its own characteristic contents and organization designed to facilitate its owner's consultation of the omens.

      The common categories into which the omens of Enūma Anu Enlil were considered to fall were four, named after the chief gods involved in the ominous communication: Sin, Shamash, Adad, and Ishtar. Sin (the Moon) contains omens involving such lunar phenomena as first crescents, eclipses, halos, and conjunctions with various fixed stars; Shamash (the Sun) deals with omens involving such solar phenomena as eclipses, simultaneous observations of two suns, and perihelia (additional suns); Adad (the weather god) is concerned with omens involving meteorological phenomena, such as thunder, lightning, and cloud formations, as well as earthquakes; and Ishtar ( Venus) contains omens involving planetary phenomena such as first and last visibilities, stations (the points at which the planets appear to stand still), acronychal risings (rising of the planet in the east when the Sun sets in the west), and conjunctions with the fixed stars.

      Though these omens are often cited in the reports of a network of observers established throughout the Assyrian (Assyria) empire in the 7th century BC, they seem to have lost their popularity late in the period of the Persian domination of Mesopotamia (ending in the 4th century BC). During the later period new efforts were made, in a large number of works called Diaries, to find the correct correlations between celestial phenomena and terrestrial events. Before this development, however, portions of the older omen series were transmitted to Egypt, Greece, and India as a direct result of Achaemenid (Achaemenid Dynasty) domination (the Achaemenian dynasty ruled in Persia from 559 to 330 BC) of these cultural areas or of their border regions.

Astral omens in Egypt (Egyptian religion), Greece (Greek religion), India, and China
      The evidence for a transmission of lunar omens to Egypt in the Achaemenian period lies primarily in a demotic papyrus based on an original of about 500 BC. A more extensive use of Mesopotamian celestial omens is attested by the fragments of a book written in Greek in the 2nd century BC and claimed as a work addressed to a King Nechepso by the priest Petosiris. From this source, among others, the contents of Enūma Anu Enlil were included in the second book of the Apotelesmatika, or “Work on Astrology” (commonly called the Tetrabiblos, or “Four Books”), by Ptolemy, a Greek astronomer of the 2nd century AD; the first book of an astrological compendium, by Hephaestion of Thebes, a Greco-Egyptian astrologer of the 5th century AD; and the On Signs of John Lydus, a Byzantine bureaucrat of the 6th century. Yet another channel of transmission to the Greeks was through the Magusaeans (magus) of Asia Minor, a group of Iranian settlers influenced by Babylonian ideas. Their teachings are preserved in several Classical works on natural history, primarily that of Pliny the Elder (c. AD 23–79), and the Geoponica (a late collection of agricultural lore).

      In various Middle Eastern languages there also exist many texts dealing with celestial omens, though their sources and the question as to whether they are directly descended from a Mesopotamian tradition or are derived from Greek or Indian intermediaries is yet to be investigated. Of these texts (Hermetic writings) the most important are those ascribed to Hermes Trismegistos by the Harranians and now preserved in Arabic, the Book of the Zodiac of the Mandaeans (a Gnostic sect still existing in Iraq and Khuzistan), the Apocalypse, attributed to the biblical prophet Daniel (extant in Greek, Syriac, and Arabic versions), and The Book of the Bee in Syriac.

      The transmission of Mesopotamian omen literature to India (Indian literature), including the material in Enūma Anu Enlil, apparently took place in the 5th century BC during the Achaemenid occupation of the Indus valley. The first traces are found in Buddhist (Buddhism) texts of this period, and Buddhist missionaries were instrumental in carrying this material to Central Asia, China, Tibet, Japan, and Southeast Asia. But the most important of the works of this Indian tradition and the oldest extant one in Sanskrit (Sanskrit language) is the earliest version of the as-yet-unpublished Gargasamhita (“Compositions of Garga”) of about the 1st century AD. The original Mesopotamian material was modified so as to fit into the Indian conception of society, including the system of the four castes and the duty of the upper castes to perform the samskaras (sanctifying ceremonies).

      There are numerous later compilations of omens in Sanskrit—of which the most notable are the Brhatsamhita, or “Great Composition,” of Varahamihira (Varāhamihira) (c. 550), the Jain Bhadrabahu-samhita, or “Composition of Bhadrabahu” (c. 10th century), and the Parishishtas (“Supplements”) of the Atharvaveda (perhaps 10th or 11th century)—though these add little to the tradition. But in the works of the 13th century and later, entitled Tājika, there is a massive infusion of the Arabic adaptations of the originally Mesopotamian celestial omens as transmitted through Persian (Tājika) translations. In Tājika the omens are closely connected with general astrology; in the earlier Sanskrit texts their connections with astrology had been primarily in the fields of military and catarchic astrology.

Astrology in the Hellenistic (Hellenistic Age) period (3rd century BC to 3rd century AD)
      In the 3rd century BC and perhaps somewhat earlier, Babylonian diviners began—for the purpose of predicting the course of an individual's life—to utilize some planetary omens: positions relative to the horizon, latitudes, retrogressions, and other positions at the moment of birth or of computed conception. This method was still far from astrology, but its evolution was more or less contemporary and parallel with the development of the science of genethlialogy in Hellenistic Egypt.

       Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of life Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of lifeEqually obscure are those individuals who, living in Egypt under the Ptolemies (a Greek dynasty ruling 305–30 BC), mathematicized the concept of a correspondence between the macrocosm (“larger order,” or universe) and the microcosm (“smaller order,” or man) as interpreted in terms of Platonic or Aristotelian theories concerning the Earth as the centre of the planetary system. They conceived of the ecliptic (the apparent orbital circle of the Sun) as being divided into 12 equal parts, or zodiacal signs, each of which consists of 30°; in this they followed the Babylonians. They further regarded each of these 12 signs as the domicile (or house) of a planet and subdivided each into various parts—decans of 10° each, fines (“bounds”) of varying lengths, and dōdecatēmoria of 2°30′ each—each of which is also dominated by a planet. Scattered at various points throughout the ecliptic are the planets' degrees of exaltation (high influence), opposite to which are their degrees of dejection (low influence). Various arcs of the zodiac, then, are either primarily or secondarily subject to each planet, whose strength and influence in a geniture (nativity) depend partially on its position relative to these arcs and to those of its friends and enemies.

      Furthermore, each zodiacal sign has a special relation with a part of the human body. The 12 signs are further divided into four triplicities, each of which governs one of the four elements. Numerous pairs of opposites (male-female, diurnal-nocturnal, hot-cold, and others), based on the speculations of the followers of Pythagoras, a Greek mystical philosopher of the 6th century BC, are connected with consecutive pairs of signs. Finally, a wide variety of substances in the elemental world and attributes of human character are more or less arbitrarily associated with the different signs. These lists of interrelationships provide the rationale for many of the astrologer's predictions.

      An individual planet's influences are related both to its general indications when regarded as ominous in Mesopotamian texts and to the traits of its presiding deity in Greek mythology. But on them are also superimposed the system of the four elements and their four qualities, the Pythagorean opposites, and lists of sublunar substances. Furthermore, as in the omens, the modes of the planetary motions are carefully considered, since their strengths are partially determined by their phases with respect to the Sun. Also, they exert a mutual influence both by occupying each other's houses and by means of conjunction and aspects—opposition (to the 7th) and quartile (to the 4th or 10th) generally being considered bad, trine (to the 5th or 9th) and sextile (to the 3rd or 11th) good.

      Moreover, as the planetary orbits revolve from west to east, the zodiac rotates daily about the Earth in the opposite sense. From a given spot on the Earth's surface this latter motion—if the ecliptic were a visible circle—would appear as a succession of signs rising one after the other above the eastern horizon. Astrologers regard the one that is momentarily in the ascendant as the first place, the one to follow it as the second, and so on, with the one that rose immediately prior to the ascendant being the 12th. In genethlialogy each place in this dōdecatropos determines an aspect of the life of the native (one born under a particular sign); in other forms of astrology the place determines some appropriate aspect of the sublunar world.

      Astrologers, then, cast a horoscope by first determining for the given moment and locality the boundaries of the 12 places and the longitudes and latitudes of the seven planets. They read this horoscope by examining the intricate geometric interrelationships of the signs and their parts and of the planets of varying computed strengths with the places and each other and by associating with each element in the horoscope its list of sublunary correspondences. Any horoscopic diagram, of course, will yield a vast number of predictions, including many that are contradictory or extravagant. Astrologers thus must rely on their knowledge of the client's social, ethnic, and economic background and on their own experience to guide them in avoiding error and attaining credibility.

      Since about 100 BC the above method has been the essential procedure of astrology, though various refinements and additional devices occasionally have been introduced, including those associated with the Hermetic (Hermetic writings) tradition of Hermes Trismegistos (Thoth) and with Dorotheus of Sidon, an influential astrological poet of the third quarter of the 1st century AD. One is the system of lots, which are influential points as distant from some specified points in the horoscopic diagram as two planets are from each other. A second is the prorogator, a point on the ecliptic that, traveling at the rate of one degree of oblique ascension a year toward either the descendant or ascendant, determines a person's length of life. Another is the method of continuous horoscopy, under which anniversary diagrams are compared with the base nativity to provide annual readings. And, finally, certain periods of life are apportioned to their governing planets in a fixed sequence; these period governors in turn share their authority with the other planets by granting them subperiods.

Astrology after the Hellenistic period
In India
       Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of life Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of lifeGreek astrology was transmitted to India in the 2nd and 3rd centuries AD by means of several Sanskrit translations, of which the one best known is that made in AD 149/150 by Yavaneshvara and versified as the Yavanajataka by Sphujidhvaja in AD 269/270. The techniques of Indian astrology are thus not surprisingly similar to those of its Hellenistic counterpart. But the techniques were transmitted without their philosophical underpinnings (for which the Indians substituted divine revelation), and the Indians modified the predictions, originally intended to be applied to Greek and Roman society, so that they would be meaningful to them. In particular, they took into account the caste system, the doctrine of metempsychosis (transmigration of souls), the Indian theory of five elements (earth, water, air, fire, and space), and the Indian systems of values.

      The Indians also found it useful to make more elaborate the already complex methodology of Hellenistic astrology. They added as significant elements the nakshatras (or lunar mansions), an elaborate system of three categories of yogas (or planetary combinations), dozens of different varieties of dashas (periods of the planets) and antardashas (subperiods), and a complex theory of ashtakavarga based on continuous horoscopy. The number of subdivisions of the zodiacal signs was increased by the addition of the horas (15° each), the saptamshas (4 2/7° each), and the navamshas (3°20′ each); the number of planets was increased by the addition of the nodes of the Moon (the points of intersection of the lunar orbit with the ecliptic) and of a series of upagrahas, or imaginary planets. Several elements of Hellenistic astrology and its Sāsānian offshoot (see below), however—including the lots, the prorogator, the Lord of the Year, the triplicities, and astrological history—were introduced into India only in the 13th century through the Tājika texts. Besides genethlialogy, the Indians particularly cultivated military astrology and a form of catarchic astrology termed muhurta-shastra and, to a lesser extent, iatromathematics and interrogatory astrology.

In Sāsānian (Sāsānian dynasty) Iran
      Shortly after Ardashīr I founded the Sāsānian empire in AD 226, a substantial transmission of both Greek and Indian astrology to Iran (Iranian religion) took place. There were Pahlavi (Pahlavi alphabet) (Iranian language) translations of Dorotheus of Sidon, Vettius Valens, Hermes, and an Indian called (in the Arabic sources) Farmasp. Since the Pahlavi originals are all lost, these translations provided the only knowledge of the Sāsānian science. Genethlialogy in Iran was essentially an imitation of the Hellenistic (though without any philosophy), onto which were grafted some Indian features, such as the navamshas and a Shaivite interpretation of illustrations of the Greco-Egyptian deities of the decans. The most influential and characteristic innovation of the Sāsānian astrologers was the development of the theory of astrological history—that is, the writing of history, both past and future, on the basis of extensions of the techniques of the prorogator, the Lord of the Year, the planetary periods, and the continuous horoscopy employed in Hellenistic genethlialogy. This was done in conjunction with Zoroastrian (Zoroastrianism) millenarianism (the division of the finite duration of the material creation into 12 millennia).

In Islam (Islāmic world)
      Astrology entered Islamic civilization in the 8th and 9th centuries in three simultaneous streams—Hellenistic, Indian, and Sāsānian. Arabic translations from the Greek and Syriac represented the Hellenistic science, from Sanskrit the Indian version, and from Pahlavi the Sāsānian combination of the two. Through the work of Abū Maʿshar (Albumazar) in the 9th century, Islamic astrology added to these influences the Harranian adaptation of the Neoplatonic definition of the mode of astral influences in terms of Aristotelian physics. Abū Maʿshar further elaborated Sāsānian astrological history and greatly expanded the number of lots that an astrologer had to take into consideration. Much attention was paid by the Muslims to catarchic and interrogatory astrology, but, under attack by the theologians for denying divine intervention in the world and man's free will, astrology rapidly declined in its appeal to Muslim intellectuals after the Mongol invasions of the 13th century, though not before its influence had spread in India, the Latin West, and Byzantium.

In Byzantium (Byzantine Empire)
      During the last upsurge of paganism in the 5th and 6th centuries AD, Byzantium (the Eastern Roman Empire) boasted a host of astrologers: Hephaestion, Julian of Laodicea, “Proclus,” Rhetorius, and John Lydus. Though their works are singularly unoriginal compilations, they remain the major sources for an understanding of earlier Hellenistic astrology. By the end of the 6th century, however, the general decline of the Byzantine Empire's intellectual life and the strong opposition of the church had combined to virtually obliterate astrology, though some practice of reading celestial omens survived in Byzantium as it did in western Europe. The science was revived only in the late 8th century and the 9th century under the impact of translations from Syriac and Arabic. The period from about 800 to 1200 was the most propitious for Byzantine astrology, though nothing was essentially added to astrological theories or techniques. This period was rivaled only by a last flowering of astrology in the late 14th century, when John Abramius and his students revised the older astrological treatises in Greek to provide the Renaissance with vulgate texts.

In western Europe
      The astrological texts of the Roman Empire (ancient Rome) were written almost universally in Greek rather than in Latin; the only surviving exceptions are the poem Astronomica of Manilius (c. AD 15–20), the Matheseos libri (“Books on Astrology”) of Firmicus Maternus (c. 335), and the anonymous Liber Hermetis (“Book of Hermes”) from the 6th century. In the absence of astronomical tables in Latin, however, none of these was works of any use, and astrology for all practical purposes disappeared with the knowledge of Greek in western Europe. It was revived only with the numerous translations of Arabic astrological and astronomical treatises executed in Spain and Sicily in the 12th and 13th centuries, supplemented by a few translations directly from the Greek. But the new astrology in the Latin-reading world remained essentially an offshoot of Islamic astrology, gaining an adequate representation of its Hellenistic originals only in the 15th and 16th centuries. These two centuries also witnessed the fullest flowering of astrology in western Europe, frequently in conjunction with Neoplatonism and Hermetism. By the 17th century, however—with the displacement of the Earth from the centre of the universe in the new astronomy of Copernicus (Copernicus, Nicolaus) (1473–1543), Galileo (1564–1642), and Johannes Kepler (Kepler, Johannes) (1571–1630) and with the rise of the new mechanistic physics of Descartes (Descartes, René) (1596–1650) and Newton (Newton, Sir Isaac) (1643–1727)—astrology lost its intellectual viability and became increasingly recognized as scientifically untenable. Though Kepler attempted to devise a new method of computing astrological influences in the heliocentric (Sun-centred) universe, he did not succeed.

Astrology in modern times
       Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of life Signs and relationships of the zodiac Relationship of positions in the zodiac to aspects of lifeIn countries such as India, where only a small intellectual elite has been trained in Western physics, astrology manages to retain here and there its position among the sciences. Its continued legitimacy is demonstrated by the fact that some Indian universities offer advanced degrees in astrology.

      In the West, however, Newtonian physics and Enlightenment rationalism largely eradicated the widespread belief in astrology, yet Western astrology is far from dead, as demonstrated by the strong popular following it gained in the 1960s. There were even attempts to reestablish a firm theoretical basis for it, notably by the French psychologist Michel Gauquelin in his The Scientific Basis of Astrology (1964), though with results that are at best inconclusive. The divisions of the year governed by the 12 zodiacal signs (which are derived from Hellenistic astrology) as depicted in newspapers, manuals, and almanacs are as follows:
● Aries, the Ram, March 21–April 19
● Taurus, the Bull, April 20–May 20
● Gemini, the Twins, May 21–June 21
● Cancer, the Crab, June 22–July 22
● Leo, the Lion, July 23–August 22
● Virgo, the Virgin, August 23–September 22
● Libra, the Balance, September 23–October 23
● Scorpio, the Scorpion, October 24–November 21
● Sagittarius, the Archer, November 22–December 21
● Capricorn, the Goat, December 22–January 19
● Aquarius, the Water Carrier, January 20–February 18
● Pisces, the Fish, February 19–March 20

      Astrologers have tried to incorporate the planets discovered since the Renaissance into the general astrological scheme and to find some sort of statistical relation between planetary positions and human lives. None of these attempts appears to be at all convincing to skeptics and other critics of astrology, however, and no serious explanation seems to exist regarding the alleged spheres of influence of the planets, the alleged nature of their influences, or the manner in which they operate. Despite these criticisms and others like them, astrology continues to attract people from all walks of life—from the casual followers who read their horoscopes in the daily newspaper to those who have their star charts drafted by professional astrologers. In short, even though it is regarded by many as devoid of intellectual value, astrology in its modern and historical forms remains of great interest to scholars and a wide spectrum of the general public.

David E. Pingree Robert Andrew Gilbert

Additional Reading
F. Leigh Gardner, A Catalogue Raisonné of Works on the Occult Sciences, vol. 2, Astrological Books (1911), useful for European astrology; J.C. Houzeau and A. Lancaster, Bibliographie générale de l'astronomie, 2 vol. in 3 (1880–89, reprinted 1964), including in vol. 1 a listing of some 2,500 works on astrology; David Amand (Emmanuel Amand de Mendieta), Fatalisme et liberté dans l'antiquité greque: recherches sur la survivance de l'argumentation morale antifataliste de Carnéade chez les philosophe grecs et les théologiens chrétiens des quatre premiers siècles (1945, reprinted 1973), a discussion of ancient philosophical criticisms of astrology; Auguste Bouché-Leclercq, L'Astrologie grecque (1899, reprinted 1979), the fundamental work on Greek astrology; Jean-Louis Brau, Helen Weaver, and Allan Edwards, Larousse Encyclopedia of Astrology (1980, reissued 1982; originally published in French, 1977), useful for modern astrology; Franz Cumont, Astrology and Religion Among the Greeks and Romans (1912, reprinted 1960), a review of astrology's position in pagan religions; Robert Eisler, The Royal Art of Astrology (1946), an excellent critical history; Eugenio Garin, Astrology in the Renaissance: The Zodiac of Life (1983; originally published in Italian, 1976), on astrology's relationship to other aspects of Hermetism; Michel Gauquelin, The Scientific Basis of Astrology: Myth or Reality (1969; originally published in French, 1964); Hilaire de Wynghene, Les Présages astrologiques (1932), a survey of astrology in ancient Mesopotamia; Ellic Howe, Urania's Children: The Strange World of the Astrologers (1967), a history of astrology in England and Germany in the 19th and 20th centuries; E.S. Kennedy and David Pingree, The Astrological History of Māshāʾ allāh (1971), an Arabic text and English translation on Sāsānian astrology; Hans Lewy, Chaldaean Oracles and Theurgy: Mysticism, Magic and Platonism in the Later Roman Empire, new ed. by Michel Tardieu (1978), on astrology's role in other divinatory practices; Carlo Alfonso Nallino, “Astrologia e astronomia presso i Musulmani. 1. Astrologia,” in his Raccolta di scritti editi e inediti, ed. by Maria Nallino, vol. 5, Astrologia, astronomia, geografia, pp. 1–41 (1944), the best discussion of astrology in Islām; David Pingree, Census of the Exact Sciences in Sanskrit, 4 vol. (1970–81), an account of Indian astrologers; and G.J. Toomer (trans.), Ptolemy's Almagest (1984), the most important classical astronomical text and the source of all subsequent astrological theory.

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  • ASTROLOGY — ASTROLOGY, the study of the supposed influence of the stars on human events and the predictions based on this study. Bible and Apocrypha There is no explicit mention of astrology in the Bible, but two biblical passages dealing with the diviner… …   Encyclopedia of Judaism

  • Astrology — As*trol o*gy ([a^]s*tr[o^]l [ o]*j[y^]), n. [F. astrologie, L. astrologia, fr. Gr. astrologi a, fr. astrolo gos astronomer, astrologer; asth r star + lo gos discourse, le gein to speak. See {Star}.] In its etymological signification, the science… …   The Collaborative International Dictionary of English

  • astrology — late 14c., from L. astrologia astronomy, the science of the heavenly bodies, from Gk. astrologia telling of the stars, from astron star (see ASTRO (Cf. astro )) + logia treating of (see LOGY (Cf. logy)). Originally identical with ASTRONOMY (Cf …   Etymology dictionary

  • astrology — [ə sträl′ə jē] n. [ME astrologie < L & Gr astrologia, astronomy, astrology < astron, STAR + logia, LOGY] 1. Historical primitive astronomy 2. a system of methods, theories, etc. based on the assumption that the positions of the moon, sun,… …   English World dictionary

  • astrology — [n] prophesy of the future by observation of stars and planets astrometry, horoscope; concept 70 …   New thesaurus

  • astrology — ► NOUN ▪ the study of the movements and relative positions of celestial bodies and their supposed influence on human affairs. DERIVATIVES astrologer noun astrological adjective astrologically adverb …   English terms dictionary

  • Astrology — Not to be confused with Astronomy. ‹ The template below (Ast box) is being considered for merging. See templates for discussion to help reach a consensus. › …   Wikipedia

  • Astrology —    Pseudoscience that sought to understand the effects of forces thought to emanate from celestial bodies (planets, moon, sun, and stars) on earthly bodies and souls. Its origins go back to the ancient Babylonians, who closely observed the… …   Historical Dictionary of Renaissance

  • Astrology —    The science of the stars, originally brought from India, continues to have a strong grip on the minds of many Burmese. Traditionally, the exact moment of a person s birth becomes the basis for a horoscope (sada in the Burmese [Myanmar]… …   Historical Dictionary of Burma (Myanmar)

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