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Western astrology is the system of
astrology Astrology is a range of divinatory practices, recognized as pseudoscientific since the 18th century, that claim to discern information about human affairs and terrestrial events by studying the apparent positions of celestial objects. Di ...
most popular in Western countries. Western astrology is historically based on
Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importanc ...
's ''
Tetrabiblos ''Tetrabiblos'' () 'four books', also known in Greek as ''Apotelesmatiká'' () "Effects", and in Latin as ''Quadripartitum'' "Four Parts", is a text on the philosophy and practice of astrology, written in the 2nd century AD by the Alexandrian ...
'' (2nd century CE), which in turn was a continuation of
Hellenistic In Classical antiquity, the Hellenistic period covers the time in Mediterranean history after Classical Greece, between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire, as signified by the Battle of Actium in ...
and ultimately Babylonian traditions. Western astrology is largely horoscopic, that is, it is a form of
divination Divination (from Latin ''divinare'', 'to foresee, to foretell, to predict, to prophesy') is the attempt to gain insight into a question or situation by way of an occultic, standardized process or ritual. Used in various forms throughout history ...
based on the construction of a
horoscope A horoscope (or other commonly used names for the horoscope in English include natal chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, cosmogram, vitasphere, radical chart, radix, chart wheel or simply chart) is an as ...
for an exact moment, such as a person's birth as well as location (since time zones may or may not affect a person's birth chart), in which various cosmic bodies are said to have an influence. Astrology in western
popular culture Popular culture (also called mass culture or pop culture) is generally recognized by members of a society as a set of practices, beliefs, artistic output (also known as, popular art or mass art) and objects that are dominant or prevalent in a ...
is often reduced to sun sign astrology, which considers only the individual's date of birth (i.e. the "position of the Sun" at that date). Astrology is a
pseudoscience Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable claim ...
and has consistently failed experimental and theoretical verification.


Core principles

A central principle of astrology is integration within the cosmos. The individual, Earth, and its environment are viewed as a single organism, all parts of which are correlated with each other. Cycles of change that are observed in the heavens are therefore reflective (not causative) of similar cycles of change observed on earth and within the individual. This relationship is expressed in the Hermetic maxim "as above, so below; as below, so above", which postulates symmetry between the individual as a
microcosm Microcosm or macrocosm, also spelled mikrokosmos or makrokosmos, may refer to: Philosophy * Microcosm–macrocosm analogy, the view according to which there is a structural similarity between the human being and the cosmos Music * Macrocosm (al ...
and the celestial environment as a macrocosm. As opposed to Sidereal astrology, Western astrology evaluates a persons birth based on the alignments of the stars and planets from the perspective on earth instead of in space. At the heart of astrology is the
metaphysical Metaphysics is the branch of philosophy that studies the fundamental nature of reality, the first principles of being, identity and change, space and time, causality, necessity, and possibility. It includes questions about the nature of conscio ...
principle that mathematical relationships express qualities or 'tones' of energy which manifest in numbers, visual angles, shapes and sounds – all connected within a pattern of proportion. An early example is Ptolemy, who wrote influential texts on all these topics.
Al-Kindi Abū Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (; ar, أبو يوسف يعقوب بن إسحاق الصبّاح الكندي; la, Alkindus; c. 801–873 AD) was an Arab Muslim philosopher, polymath, mathematician, physician ...
, in the 9th century, developed Ptolemy's ideas in ''De Aspectibus'' which explores many points of relevance to astrology and the use of planetary aspects.


The zodiac

The zodiac is the belt or band of constellations through which the Sun, Moon, and planets move on their journey across the sky. Astrologers noted these constellations and so attached a particular significance to them. Over time they developed the system of twelve signs of the zodiac, based on twelve of the constellations through which the sun passes throughout the year, those constellations that are "Enlightened by the mind". Most western astrologers use the tropical zodiac beginning with the sign of Aries at the
Northern Hemisphere The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the solar system as Earth's Nort ...
vernal equinox always on or around March 21 of each year. The Western Zodiac is drawn based on the Earth's relationship to fixed, designated positions in the sky, and the Earth's seasons. The Sidereal Zodiac is drawn based on the Earth's position in relation to the constellations, and follows their movements in the sky. Due to a phenomenon called
precession of the equinoxes In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the absence of precession, the astronomical body's orbit would show axial parallelism. In partic ...
(where the Earth's axis slowly rotates like a spinning top in a 25,700-year cycle), there is a slow shift in the correspondence between Earth's seasons (and calendar) and the constellations of the zodiac. Thus, the tropical zodiac corresponds with the position of the earth in relation to fixed positions in the sky (Western Astrology), while the sidereal zodiac is drawn based on the position in relation to the constellations (sidereal zodiac).


The twelve signs

In modern Western astrology the
sign A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or ...
s of the
zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The pa ...
are believed to represent twelve basic personality types or characteristic modes of expression. The twelve signs are divided into four elements
fire Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. At a certain point in the combustion reaction, called the ignition point, flames ...
,
earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's sur ...
, air and
water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as ...
. Fire and air signs are considered masculine, while water and earth signs are considered feminine. The twelve signs are also divided into three qualities, also called modalities,
Cardinal Cardinal or The Cardinal may refer to: Animals * Cardinal (bird) or Cardinalidae, a family of North and South American birds **'' Cardinalis'', genus of cardinal in the family Cardinalidae **'' Cardinalis cardinalis'', or northern cardinal, t ...
,
fixed Fixed may refer to: * ''Fixed'' (EP), EP by Nine Inch Nails * ''Fixed'', an upcoming 2D adult animated film directed by Genndy Tartakovsky * Fixed (typeface), a collection of monospace bitmap fonts that is distributed with the X Window System * F ...
and
mutable In object-oriented and functional programming, an immutable object (unchangeable object) is an object whose state cannot be modified after it is created.Goetz et al. ''Java Concurrency in Practice''. Addison Wesley Professional, 2006, Section 3. ...
. *Note: these are only approximations and the exact date on which the sign of the sun changes varies from year to year. Zodiac sign for an individual depends on the placement of planets and the ascendant in that sign. If a person has nothing placed in a particular sign, that sign will play no active role in their personality. On the other hand, a person with, for example, both the sun and moon in Cancer, will strongly display the characteristics of that sign in their make up.


Sun-sign astrology

Newspapers often print astrology columns which purport to provide guidance on what might occur in a day in relation to the
sign A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or ...
of the zodiac that included the sun when the person was born. Astrologers refer to this as the "sun sign", but it is often commonly called the "star sign". These predictions are vague or general; so much so that even practicing astrologers consider them of little to no value on their own. Experiments have shown that when people are shown a newspaper horoscope for their own sign along with a newspaper horoscope for a different sign, they judge them to be equally accurate on the average. Other tests have been performed on complete, personalized horoscopes cast by professional astrologers, and have shown no correlation between the horoscope results and the person it was cast for.


The planets

In modern Western astrology the planets represent basic drives or impulses in the human psyche. These planets differ from the definition of a planet in
astronomy Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, g ...
in that the Sun, Moon, and recently,
Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of trans-Neptunian object, bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the S ...
are all considered to be planets for the purposes of astrology. Each planet is also said to be the
ruler A ruler, sometimes called a rule, line gauge, or scale, is a device used in geometry and technical drawing, as well as the engineering and construction industries, to measure distances or draw straight lines. Variants Rulers have long ...
of one or two zodiac signs. The three outer planets (Uranus, Neptune, Pluto) have each been assigned rulership of a zodiac sign by astrologers. Traditionally rulership of the signs was, according to
Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importanc ...
, based on seasonal derivations and astronomical measurement, whereby the luminaries being the brightest planets were given rulership of the brightest months of the year and Saturn the coldest furthest classical planet was given to the coldest months of the year, with the other planets ruling the remaining signs as per astronomical measurement. It is noteworthy that the modern rulerships do not follow the same logic.


Classical planets

The astrological 'planets' are the seven heavenly bodies known to the ancients. The Sun and Moon, also known as 'the lights', are included as they were thought to act like the astronomical planets. Astrologers call inner planets Mercury, Venus and Mars, the 'personal planets', as they represent the most immediate drives. The 'lights' symbolise respectively the existential and sensitive fundamentals of the individuality. The following table summarizes the rulership by the seven classically known planetsPlanet description
/ref> of each of the twelve astrological signs, together with their effects on world events, people and the earth itself as understood in the Middle Ages.


Modern modifications to the Ptolemaic system


Additional planets

These are the planets discovered in modern times, which have since been assigned meanings by Western astrologers.


Sidereal and tropical astrology

There are two camps of thought among western astrologers about the "starting point", 0 degrees Aries, in the zodiac. Sidereal astrology uses a fixed starting point in the background of stars, while tropical astrology, used by the majority of Western astrologers, chooses as a starting point the position of the Sun against the background of stars at the Northern hemisphere vernal equinox (i.e. when the Sun position against the heavens crosses over from the southern hemisphere to the northern hemisphere) each year. The consequence of the Tropical approach is that when we say the Sun or a planet is in a certain zodiac sign, observation of it in the sky will show that it does not lie within that constellation at all. As the Earth spins on its axis, it "wobbles" like a top, causing the vernal equinox to move gradually backwards against the star background, (a phenomenon known as the
Precession of the equinoxes In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the absence of precession, the astronomical body's orbit would show axial parallelism. In partic ...
) at a rate of about 30 degrees (one Zodiacal sign length) every 2,160 years. Thus the two zodiacs would be aligned only once every 26,000 years. They were aligned about 2,000 years ago when the zodiac was originally established. This phenomenon gives us the conceptual basis for the
Age of Aquarius The Age of Aquarius, in astrology, is either the current or forthcoming astrological age, depending on the method of calculation. Astrologers maintain that an astrological age is a product of the earth's slow precessional rotation and lasts for 2 ...
, whose "dawning" coincides with the movement of the vernal equinox across the cusp from Pisces to Aquarius in the star background.


The moon's nodes

Also important in astrology are the moon's nodes. The nodes are where the
moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
's path crosses the
ecliptic The ecliptic or ecliptic plane is the orbital plane of the Earth around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic agains ...
. The North, or Ascending Node marks the place where the moon crosses from South to North (or ascends), while the South, or
Descending Node An orbital node is either of the two points where an orbit intersects a plane of reference to which it is inclined. A non-inclined orbit, which is contained in the reference plane, has no nodes. Planes of reference Common planes of reference ...
marks where the moon crosses from North to South (or descends). While Lunar nodes are not considered by Western astrologers to be as important a factor as each of the planets, they are thought to mark sensitive areas that are worth taking into account. * – North or ascending
Node In general, a node is a localized swelling (a " knot") or a point of intersection (a vertex). Node may refer to: In mathematics * Vertex (graph theory), a vertex in a mathematical graph * Vertex (geometry), a point where two or more curves, line ...
. Also the ruler of Pathways and Choices. * – South or descending Node. Also the ruler of Karma and the Past.


Essential dignity

In astrology, "essential dignity" is the strength of a planet or point's zodiac position, judged only by its position by sign and degree, what the pre-eminent 17th-century astrologer
William Lilly William Lilly (9 June 1681) was a seventeenth century English astrologer. He is described as having been a genius at something "that modern mainstream opinion has since decided cannot be done at all" having developed his stature as the most imp ...
called "the strength, fortitude or debility of the Planets rsignificators." In other words, essential dignity seeks to view the strengths of a planet or point as though it were isolated from other factors in the sky of the natal chart. Traditionally, there are five dignities: domicile and detriment, exaltation and fall, triplicity, terms, and face. However, the later two have diminished in usage. A planet's domicile is the zodiac sign over which it has rulership.


The horoscope

Western astrology is based mainly upon the construction of a
horoscope A horoscope (or other commonly used names for the horoscope in English include natal chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, cosmogram, vitasphere, radical chart, radix, chart wheel or simply chart) is an as ...
, which is a map or ''chart'' of the heavens at a particular moment. The moment chosen is the beginning of the existence of the subject of the horoscope, as it is believed that the subject will carry with it the pattern of the heavens from that moment throughout its life. The most common form of horoscope is the natal chart based on the moment of a person's birth; though in theory a horoscope can be drawn up for the beginning of anything, from a business enterprise to the foundation of a nation state.


Interpretation

In Western horoscopic astrology the interpretation of a horoscope is governed by: *The position of the planets in the astrological signs of the
zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The pa ...
, *The position of the planets in the houses of the horoscope, *The position of the primary angles of the horoscope, namely the
horizon The horizon is the apparent line that separates the surface of a celestial body from its sky when viewed from the perspective of an observer on or near the surface of the relevant body. This line divides all viewing directions based on whether i ...
line (called the ascendant/ descendant axis), and the prime vertical line (called the
zenith The zenith (, ) is an imaginary point directly "above" a particular location, on the celestial sphere. "Above" means in the vertical direction ( plumb line) opposite to the gravity direction at that location ( nadir). The zenith is the "high ...
/ midheaven and
nadir The nadir (, ; ar, نظير, naẓīr, counterpart) is the direction pointing directly ''below'' a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface. The direc ...
/ imum coeli axis), *The angles formed by the planets relative to each other and the primary angles, called aspects *The position of deduced astronomical entities, such as the
Lunar node A lunar node is either of the two orbital nodes of the Moon, that is, the two points at which the orbit of the Moon intersects the ecliptic. The ''ascending'' (or ''north'') node is where the Moon moves into the northern ecliptic hemisphere ...
s. Some astrologers also use the position of various mathematical points such as the Arabic parts.


The primary angles

There are four primary angles in the horoscope (though the cusps of the houses are often included as important angles by some astrologers). * - The ascendant or ''rising sign'' is the eastern point where the
ecliptic The ecliptic or ecliptic plane is the orbital plane of the Earth around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic agains ...
and horizon intersect. During the course of a day, because of the Earth's rotation, the entire circle of the ecliptic will pass through the ascendant and will be advanced by about 1°. This provides us with the term ''rising sign'', which is the sign of the zodiac that was rising in the east at the exact time that the horoscope or natal chart is calculated. In creating a horoscope the ascendant is traditionally placed as the left-hand side point of the chart. In most house systems the ascendant lies on the cusp of the 1st house of the horoscope. The ascendant is generally considered the most important and personalized angle in the horoscope by the vast majority of astrologers. It signifies a person's awakening consciousness, in the same way that the Sun's appearance on the eastern horizon signifies the dawn of a new day. Due to the fact that the ascendant is specific to a particular time and place, it signifies the individual environment and conditioning that a person receives during their upbringing, and also the circumstances of their childhood. For this reason, the ascendant is also concerned with how a person has learned to present themself to the world, especially in public and in impersonal situations. The opposite point to the ascendant in the west is the descendant, which denotes how a person reacts in their relationships with others. It also show the kind of person we are likely to be attracted to, and our ability to form romantic attachments. In most house systems the descendant lies on the cusp of the 7th house of the horoscope. * - The midheaven or ''medium coeli'' is the point on the ecliptic that is furthest above the plane of the horizon. For events occurring where the planes of the ecliptic and the horizon coincide, the limiting position for these points is located 90° from the ascendant. For astrologers, the midheaven traditionally indicates a person's career, status, aim in life, aspirations, public reputation, and life goal. In ''quadrant house'' systems the midheaven lies on the cusp of the 10th house of the horoscope. The opposite point to the midheaven is known as the imum coeli. For astrologers the nadir or IC traditionally indicates the circumstances at the beginning and end of a person's life, their parents and the parental home, and their own domestic life. In ''quadrant house'' systems it lies on the cusp of the 4th house of the horoscope.


The houses

The horoscope is divided by astrologers into 12 portions called the houses. The houses of the horoscope are interpreted as being 12 different spheres of life or activity. There are various ways of calculating the houses in the horoscope or birth chart. However, there is no dispute about their meanings, and the 12 houses Many modern astrologers assume that the houses relate to their corresponding signs, i.e. that the first house has a natural affinity with the first sign, Aries, and so on.


Aspects

The aspects are the angles the planets make to each other in the horoscope, and also to the ascendant, midheaven, descendant and nadir. The aspects are measured by the angular distance along the
ecliptic The ecliptic or ecliptic plane is the orbital plane of the Earth around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic agains ...
in degrees and minutes of celestial longitude between two points, as viewed from the earth. They indicate focal points in the horoscope where the energies involved are given extra emphasis. The more exact the angle, the more powerful the aspect, although an allowance of a few degrees each side of the aspect called an ''orb'' is allowed for interpretation. The following are the aspects in order of importance: * - Conjunction 0° (orb ±10°). The conjunction is a major point in the chart, giving strong emphasis to the planets involved. The planets will act together to outside stimulus and act on each other. * -
Opposition Opposition may refer to: Arts and media * ''Opposition'' (Altars EP), 2011 EP by Christian metalcore band Altars * The Opposition (band), a London post-punk band * '' The Opposition with Jordan Klepper'', a late-night television series on Com ...
180° (orb ±10°). The opposition is indicative of tension, conflict and confrontation, due to the polarity between the two elements involved. Stress arises when one is used over the other, causing an imbalance; but the opposition can work well if the two parts of the aspect are made to complement each other in a synthesis. * - Trine 120°(orb ±7.5°). The trine indicates harmony, and ease of expression, with the two elements reinforcing each other. The trine is a source of artistic and creative talent, but can be a 'line of least resistance' to a person of weak character. * -
Square In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90- degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle with two equal-length a ...
90°(orb ±7.5°). The square indicates frustration, inhibitions, disruption and inner conflict, but can become a source of energy and activation to a person determined to overcome limitations. * -
Sextile In astrology, an aspect is an angle that planets make to each other in the Horoscope; as well as to the Ascendant, Midheaven, Descendant, Lower Midheaven, and other points of astrological interest. As viewed from Earth, aspects are measured ...
60°(orb ±5°). The sextile is similar to the trine, but of less significance. It indicates ease of communication between the two elements involved, with compatibility and harmony between them. * -
Quincunx A quincunx () is a geometric pattern consisting of five points arranged in a cross, with four of them forming a square or rectangle and a fifth at its center. The same pattern has other names, including "in saltire" or "in cross" in heraldry (d ...
150°(orb ±2.5°). The quincunx indicates difficulty and stress, due to incompatible elements being forced together. It can mean an area of self-neglect in a person's life (especially health), or obligations being forced on a person. The quincunx can vary from minor to quite major in impact. * - Semisextile 30° (orb ±1.25°). Slight in effect. Indicates an area of life where a conscious effort to be positive will have to be made. * - Semisquare 45°(orb ±2.5°). Indicates somewhat difficult circumstance. Similar in effect to semisextile. * -
Sesquiquadrate In astrology, an aspect is an angle that planets make to each other in the Horoscope; as well as to the Ascendant, Midheaven, Descendant, Lower Midheaven, and other points of astrological interest. As viewed from Earth, aspects are measured by ...
135°(orb ±2.5°). Indicates somewhat stressful conditions. Similar to semisextile. * -
Quintile Quintile may refer to: *In statistics, a quantile In statistics and probability, quantiles are cut points dividing the range of a probability distribution into continuous intervals with equal probabilities, or dividing the observations in a ...
72° (orb ±1.25°). Slight in effect. Indicates talent and vaguely fortunate circumstances. * - Biquintile 144° (orb ±1.25°). Slight in effect. Indicates talent and vaguely fortunate circumstances. * - Retrograde: A planet is retrograde when it appears to move backwards across the sky when seen from the earth. Although it is not an aspect, some astrologers believe that it should be included for consideration in the chart. Planets which are retrograde in the natal chart are considered by them to be potential weak points.


Astrology and science

The majority of professional astrologers rely on performing astrology-based personality tests and making relevant predictions about the remunerator's future. Those who continue to have faith in astrology have been characterised 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". Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity, and as such, is regarded as
pseudoscience Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable claim ...
. There is no proposed mechanism of action by which the positions and motions of stars and planets could affect people and events on Earth that does not contradict well understood, basic aspects of biology and physics. Where astrology has made
falsifiable Falsifiability is a standard of evaluation of scientific theories and hypotheses that was introduced by the philosopher of science Karl Popper in his book '' The Logic of Scientific Discovery'' (1934). He proposed it as the cornerstone of a so ...
predictions, it has been falsified. The most famous test was headed by Shawn Carlson and included a committee of scientists and a committee of astrologers. It led to the conclusion that natal astrology performed no better than chance.


See also

*
Zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year. The pa ...
* Astrological symbols * Astrological signs * List of asteroids in astrology * Chinese zodiac * Circle of stars * Cusp (astrology) * Elements of the zodiac * Natal astrology *
Synoptical astrology The theory of synoptical astrology was created by László Wladimir Orosz, Hungarian philosopher and astrologer. This synopsis considers the tropical and the sidereal zodiacs simultaneously with the constellational zodiac or the real zodiacal ...
* Tarotscope


Notes


References


Bibliography

* * * * * * * * * * * * * * * * * * * *


External links


The Astrotest
- An account of a test of the predictive power of astrology, with references to other experiments. {{Portal bar, Astronomy, Stars Astrology History of astrology Astrology by tradition Pseudoscience