Saturday, July 9, 2016

Astronomy and Astrology of the Medieval Islamic World

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Medieval Period – Scientists’ Contribution to Astronomy


Scientists during the medieval period had made great contribution to the field of astronomy. They had updated methods of measuring and calculating the movements of heavenly bodies while their work was centred on ancient sources from Greece, India and Iran, they continued to progress models of the universe as well as the movements of the planets in it. In the midst of the eighth and tenth centuries, Baghdad had been a main center of study under the Abbasid caliph al-Mansur and al-Ma’mum though the local rulers through the region, in Cairo, Rayy, Isfahan together with the other cities had supported scientific exploration.

Scientists during that time, translated studies in Sanskrit, Pahlavi and Greek into Arabic and Arab Bedouin was recorded for the first time. The Persian Pahlavi and the Indian Sanskrit sources imparted medieval astronomers methods to calculate the position of heavenly bodies as well as in creating tables recording the movements of the sun, moon and the five known popular planets. The Bedouin traditions contain information on fixed stars, the passage of the sun and moon via the zodiacal signs as well as lunar mansion together with the seasons and connected phenomenon.
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Aristotle’s model of Universe – Widely Accepted


The form of information had been refined in section due to the specific needs of Islam, the religion need the skill to determine the time and direction of Mecca for prayer, accurately, the moment of sunrise and sunset for the purpose of fasting during Ramadan. It was also needed for fixing the appearance of the moon which marked the beginning of a new month, leading to the refinement of scientific instruments. This was an improvement in systems in making observations together with the creation of new calendrical methods.

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Another section of study had been led by astronomers interested in a correct understanding of the movements of the planet in reply to the inquiries of Greek in this area. The most influential Greek texts were more concerned in developing a model of the universe and the movement of the heavenly bodies in it. However the literature planned two diverse approaches to this issue. Aristotle’s model of the universe, on the other hand with the earth at its centre and the sun, moon, planets and the fixed stars that rotate around it, in uniformly turning spheres had been widely accepted.
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Astrology – Predicts Influence of Heavenly Bodies on Events on Earth


The work of Ptolemy instead pursued a purely theoretical, geometrical representation of the universe centred on accurate observation even though it differed with the ideal Aristotelian model of stars and planets.Astrology tends to seek in predicting the influence of the heavenly bodies on events on earth, depending on understanding the movement of the planet together with the skills to calculate their position in the near future.
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This way, astrology had been considered as a branch of astronomy with serious scientist like Abu Ma’shar al-Balkhi, al-Biruni and Nasir al-Din al-Tusi who wrote astrological treatises. The amount of medieval theologians, jurists and philosophers who had written anti-astrology tract tends to indicate that it was controversial and not accepted universally as a scientific or ethical practice.

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