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Islamic Astronomy by Michelle D. Yun, Michelle Chong, Tori Williams, and Brenda Su by Mind Map: Islamic Astronomy by Michelle D.
Yun, Michelle Chong, Tori Williams,
and Brenda Su
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Islamic Astronomy by Michelle D. Yun, Michelle Chong, Tori Williams, and Brenda Su

Greek influences


Ptolemic model, This model in summary said that the earth was in the center and other objects orbit it -a geocentric model

Improvements or alternatives, Muslim schools of thoughts revolted against the Ptolemic model, came up with the idea of a HELIOCENTRIC MODEL meaning the sun being in the center and the planets revolving around it.



developed TRIGONOMETRY to calculate and solved many problems of spherical trig., he used trigonometry to form accurate models of the sun and moon's motions, DISCOVERED PRECESSION, predicted eclipses and possibly invented the astrolabe., Possibly developed astrolabe

Lived in the desert

Therefore no particular landmarks and the Muslims needed to navigate. But why?

Religious purposes, Qibla-They needed to pray towards Mecca where the Kaba is, Salah-They must pray five times a day and certain times a day, Although they had sundials and waterclocks they wanted something more accurate

Muslims are eclectic

Muslims preserved Greek Manuscripts

The mistake of Ptolemic model, The model according to Averreos was against nature it was just not right., After trial and error and many schools revolting (revolutionizing) the idea of the Ptolemic model by improving it or finding alternatives to it., Concluded and suggested a HELIOCENTRIC MODEL, Meaning the sun was in the center and the earth as well as other planets orbited the sun., later on in 1543 Copernican took credit for this work the idea of the sun being in the center

Observational influence of Aristotle, The Muslims observed the stars and many astronomers were the first observers of the Magallenic Cloud and the Andromeda Galaxy, Also with this idea of observing many other astronomers like al-Sufi named 480 stars and published the book of Book of Fixed Stars using Ptolemy's book of stars and al-Sufi correcting the book of Ptolemy.

The Astronomical and Mathematical Tools from Hipparchus, Obviously they used the astrolabe and the spherical astrolabe as well in improving it, With this the Muslims answered their questions and with the astrolabe they were able to use it for many uses., al-Sufi found a thousand uses for the astrolabe., The main uses are for:, Timekeeping, Able to tell what it is and predict time, Navigating, Tells you what position the sun and moon are as well as the stars, Surveying, Qibla, Helped point out the direction of Mecca, Salah, The Five Prayers helped tell what it is and what it will be, Astrology, Horoscopes, Geography, They used Trig. Tables, Geometry, Algebra., (extra fact) used sine and tangent formulas

Extra acheivemants

One astronomer helped answer a question of a Greek astronomer

Took the idea that the tilt of the earth causes seasons, But the Greek astronomer didn't know what degree of the tilt was, The Muslim astronomer then used the highest elevation of the sun and the lowest elevation of the sun in midwinter. Take the degree between the two elevations and divide it by two. The answer was =23 degress


Inspired a famous western astronomer

Galileo Galilei