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Some medieval Muslims took a keen interest in the study of astrology, despite the Islamic prohibitions (The Quran, points to the primary purpose of astrology as a means of providing physical guidance/navigation for an adherent, essentially considering its use in the capacity of horoscopes as forbidden.)partly because they considered the celestial bodies to be essential, partly because the dwellers of desert-regions often travelled at night, and relied upon knowledge of the constellations for guidance in their journeys.Wasim Aktar, ''Contributions of Ancient Arabian and Egyptian Scientists on Astronomy''
Public Science & Reference
, retrieved 19 August 2011.
After the advent of Islam, the
Muslims Muslims ( ar, المسلمون, , ) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God of Abrah ...
needed to determine the time of the prayers, the direction of the Kaaba, and the correct orientation of the
mosque A mosque (; from ar, مَسْجِد, masjid, ; literally "place of ritual prostration"), also called masjid, is a place of prayer for Muslims. Mosques are usually covered buildings, but can be any place where prayers ( sujud) are performed, ...
, all of which helped give a religious impetus to the study of
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 ...
and contributed towards the belief that the heavenly bodies were influential upon terrestrial affairs as well as the human condition. The science dealing with such influences was termed ''
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 ...
'' (
Arabic Arabic (, ' ; , ' or ) is a Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C. E.Watson; Walter ...
: علم النجوم ''Ilm an-Nujūm''), a discipline contained within the field of astronomy (more broadly known as علم الفلك ''Ilm al-Falak'' 'the science of formation f the heavens). The principles of these studies were rooted in Arabian, Persian, Babylonian,
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 Indian traditions and both were developed by the Arabs following their establishment of a magnificent observatory and library of astronomical and astrological texts at
Baghdad Baghdad (; ar, بَغْدَاد , ) is the capital of Iraq and the second-largest city in the Arab world after Cairo. It is located on the Tigris near the ruins of the ancient city of Babylon and the Sassanid Persian capital of Ctesiphon. I ...
in the 8th century. Throughout the medieval period the practical application of astrology was subject to deep philosophical debate by Muslim religious scholars and scientists. Astrological prognostications nevertheless required a fair amount of exact scientific expertise and the quest for such knowledge within this era helped to provide the incentive for the study and development of astronomy.


Early history

Medieval Islamic astrology and astronomy continued Hellenistic and Roman era traditions 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 importance ...
's '' Almagest''. Centres of learning in medicine and astronomy/astrology were set up in Baghdad and Damascus, and the Caliph
Al-Mansur Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr (; ar, أبو جعفر عبد الله بن محمد المنصور‎; 95 AH – 158 AH/714 CE – 6 October 775 CE) usually known simply as by his laqab Al-Manṣūr (المنصور) w ...
of Baghdad established a major observatory and library in the city, making it the world's astronomical centre. During this time knowledge of astronomy was greatly increased. Many modern star names are derived from their
Arabic names Arabic language names have historically been based on a long naming system. Many people from the Arabic-speaking and also Muslim countries have not had given/ middle/family names but rather a chain of names. This system remains in use throughou ...
. Albumasur or Abu Ma'shar (805 - 885) was one of the most influential Islamic astrologers. His treatise ''Introductorium in Astronomiam'' (''Kitab al-Mudkhal al-Kabīr'') spoke of how '"only by observing the great diversity of planetary motions can we comprehend the unnumbered varieties of change in this world". The ''Introductorium'' was one of the first books to find its way in translation through Spain and into Europe in the Middle Ages, and was highly influential in the revival of astrology and astronomy there. Persians also combined the disciplines of medicine and astrology by linking the curative properties of herbs with specific zodiac signs and planets. Mars, for instance, was considered hot and dry and so ruled plants with a hot or pungent taste, like
hellebore Commonly known as hellebores (), the Eurasian genus ''Helleborus'' consists of approximately 20 species of herbaceous or evergreen perennial flowering plants in the family Ranunculaceae, within which it gave its name to the tribe of Helleboreae. ...
,
tobacco Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the ...
or
mustard Mustard may refer to: Food and plants * Mustard (condiment), a paste or sauce made from mustard seeds used as a condiment * Mustard plant, one of several plants, having seeds that are used for the condiment ** Mustard seed, seeds of the mustard p ...
. These beliefs were adopted by European
herbalist Herbal medicine (also herbalism) is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. With worldwide research into pharmacology, some herbal medicines have been translated into modern remed ...
s like Culpeper right up until the development of modern medicine. The Persians also developed a system, by which the difference between the ascendant and each planet of the zodiac was calculated. This new position then became a 'part' of some kind. For example, the 'part of fortune' is found by taking the difference between the sun and the ascendant and adding it to the moon. If the 'part' thus calculated was in the 10th House in Libra, for instance, it suggested that money could be made from some kind of partnership. The calendar introduced by
Omar Khayyam Ghiyāth al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm Nīsābūrī (18 May 1048 – 4 December 1131), commonly known as Omar Khayyam ( fa, عمر خیّام), was a polymath, known for his contributions to mathematics, astronomy, philosophy, an ...
, based on the classical zodiac, remains in effect in
Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordere ...
and
Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
as the official
Solar Hijri calendar The Solar calendar ( fa, گاه‌شماری هجری خورشیدی, Gâhšomâri-ye Xoršidi; ps, لمريز لېږدیز کلیز, lamrez legdez kalhandara; ku, ڕۆژژمێری کۆچیی ھەتاوی, Salnameya Koçberiyê) is a solar c ...
. Another notable Persian astrologer and astronomer was
Qutb al-Din al Shirazi Qotb al-Din Mahmoud b. Zia al-Din Mas'ud b. Mosleh Shirazi (1236–1311) ( fa, قطب‌الدین محمود بن ضیاالدین مسعود بن مصلح شیرازی) was a 13th-century Persian polymath and poet who made contributions to a ...
born in Iran, Shiraz (1236–1311). He wrote critiques of Ptolemy's Almagest and produced two prominent works on astronomy: 'The Limit of Accomplishment Concerning Knowledge of the Heavens' in 1281 and 'The Royal Present' in 1284, both of which commented upon and improved on Ptolemy's work, particularly in the field of planetary motion. Ulugh Beyg was a fifteenth-century Timurid Sultan and also a mathematician and astronomer. He built an observatory in 1428 and produced the first original star map since Ptolemy, which corrected the position of many stars and included many new ones.


Medieval understanding

Some of the principles of astrology were refuted by several medieval Islamic astronomers such as
Al-Farabi Abu Nasr Muhammad Al-Farabi ( fa, ابونصر محمد فارابی), ( ar, أبو نصر محمد الفارابي), known in the West as Alpharabius; (c. 872 – between 14 December, 950 and 12 January, 951)PDF version was a renowned early Isl ...
(Alpharabius),
Ibn al-Haytham Ḥasan Ibn al-Haytham, Latinized as Alhazen (; full name ; ), was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq.For the description of his main fields, see e.g. ("He is one of the pri ...
(Alhazen), Avicenna, Abu Rayhan al-Biruni and
Averroes Ibn Rushd ( ar, ; full name in ; 14 April 112611 December 1198), often Latinized as Averroes ( ), was an Andalusian polymath and jurist who wrote about many subjects, including philosophy, theology, medicine, astronomy, physics, psy ...
. Their reasons for refuting astrology were often due to both scientific (the methods used by astrologers being conjectural rather than empirical) and religious (conflicts with orthodox Islamic scholars) reasons. However these refutations mainly concerned the judicial branches of astrology rather than the natural principles of it. For example, Avicenna's refutation of astrology (in the treatise titled ''Resāla fī ebṭāl aḥkām al-nojūm'', Treatise against the rulings of the stars) revealed support for its overarching principles. He stated that it was true that each planet had some influence on the earth, but his argument was the difficulty of astrologers being able to determine the exact effect of it. In essence, Avicenna did not refute astrology, but denied man's limited capacity to be able to know the precise effects of the stars on the sublunar matter. With that, he did not refute the essential dogma of astrology, but only refuted our ability to fully understand it. Another Damascene scientist Ibn Qayyim Al-Jawziyya (1292–1350), in his ''Miftah Dar al-Sa'adah'', used empirical arguments in astronomy in order to refute the judicial practice of astrology which is most closely aligned to divination. He recognized that the stars are much larger than the
planet A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...
s, and thus argued: Al-Jawziyya also recognized the
Milky Way The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. ...
galaxy as "a myriad of tiny stars packed together in the sphere of the fixed stars" and thus argued that "it is certainly impossible to have knowledge of their influences."


Modernist opinions

According to most contemporary Islamic jurists, while the study of astronomy (''ilm al-hay'ah'') is lawful, astrology is not. Astronomy is useful in determining the beginning and end of the lunar months, e.g., that of Ramadan, in predicting the beginning of seasons, determining the direction of salat (prayer), and navigation; astrology is considered
haram ''Haram'' (; ar, حَرَام, , ) is an Arabic term meaning 'Forbidden'. This may refer to either something sacred to which access is not allowed to the people who are not in a state of purity or who are not initiated into the sacred knowle ...
(forbidden), as knowledge of the future, of the Unseen is known only by Allah (God). Dr. Husam al-Din Ibn Musa `Afana, a Professor of the Principles of
Fiqh ''Fiqh'' (; ar, فقه ) is Islamic jurisprudence. Muhammad-> Companions-> Followers-> Fiqh. The commands and prohibitions chosen by God were revealed through the agency of the Prophet in both the Quran and the Sunnah (words, deeds, and ...
at Al-Quds University, Palestine, states the following:
First of all, it is worth noting that the
Persians The Persians are an Iranian ethnic group who comprise over half of the population of Iran. They share a common cultural system and are native speakers of the Persian language as well as of the languages that are closely related to Persian. ...
knew astronomy a long time ago. They would predict time through observing the movements of stars. These terms are astronomy and astrology. Astronomy is the science that deals with studying the movements of the celestial bodies and reducing observations to mathematical order. That science is useful in determining time, seasons, the direction of Prayer, etc. Astrology, on the other hand, is concerned with studying the positions and aspects of celestial bodies in the belief that they have an influence on the course of natural earthly occurrences and human affairs. Astrologists believe that the movements of stars have an influence on people's lives. Both Muslim astronomers and eligiousscholars refuse the prophecies of astrologists.
The Turkish government-sponsored ''Diyanet Vakfı'', which represents the official Sunni view, likewise draws a distinction between astronomy and astrology, identifying the latter with non-Islamic influences on Arab culture, specifically Sabean and Hindu astrology. Astrology is seen as unscientific and conducive of a view of humans as helpless in the face of natural forces. Amongst the general population, however, astrology is popular, with most major newspapers running astrology columns. Most scholars believe that astrology is a prohibited field of study. Imam
Ibn Taymiyah Ibn Taymiyyah (January 22, 1263 – September 26, 1328; ar, ابن تيمية), birth name Taqī ad-Dīn ʾAḥmad ibn ʿAbd al-Ḥalīm ibn ʿAbd al-Salām al-Numayrī al-Ḥarrānī ( ar, تقي الدين أحمد بن عبد الحليم � ...
stated: “Astrology that is concerned with studying the positions and aspects of celestial bodies in the belief that they have an influence on the course of natural earthly occurrences and human affairs is prohibited by the Quran, the Sunnah, and the unanimous agreement of the Muslim scholars. Furthermore, astrology was considered forbidden by all Messengers of Almighty Allah." Saudi scholar Muhammad ibn al Uthaymeen is reported to have declared Astrology to be forbidden sorcery and fortune-telling.


See also

* Astronomy in the medieval Islamic world * Christian views on astrology * Hellenistic astrology * Islam and astrology * Jewish views on astrology * Sufism *
Superstitions in Muslim societies Superstition is an excessively credulous belief in supernatural causality: the belief that one event is the cause of another without any physical process linking the two, such as astrology, omens, witchcraft, and apotropaic magic. According to Ras ...


References


Citations

*


Further reading

* Edward S. Kennedy. (1962). "Ramifications of the World Year Concept in Islamic Astrology". ''Ithaca'' 26 VIII-2 IX. * Edward S. Kennedy. (1998), ''Astronomy and Astrology in the Medieval Islamic World''. Brookfield, VT: Ashgate. *


External links


''Arabian Astrology''
by James Holden

by Robert Hand
Astrology''Astrology''
{{DEFAULTSORT:Medieval Islamic Astrology Islamic Golden Age