Ali Qushji

Ala al-Dīn Ali ibn Muhammed
Ala al-Dīn Ali ibn Muhammed
Personal
Born	1403 CE; Samarkand, Timurid Empire (now Uzbekistan)
Died	1474 CE; Constantinople, Ottoman Empire (now Turkey)
Religion	Islam
Era	Ottoman era
Denomination	Sunni
Jurisprudence	Hanafi
Creed	Maturidi/Ash'ari
Main interest(s)	Kalam (Islamic theology), Fiqh (Islamic jurisprudence), Falkiat, Mathematics
Notable work(s)	Concerning the Supposed Dependence of Astronomy upon Philosophy
Muslim leader
	Influenced by Al-Ghazali, Adud al-Din al-Iji, Al-Jurjani;
	Influenced Mirim Çelebi, Muhammad al-Qunawi;

Ala al-Dīn Ali ibn Muhammed (1403 – 16 December 1474), known as Ali Qushji (Ottoman Turkish : علی قوشچی, kuşçu – falconer in Turkish; Latin: Ali Kushgii) was a Timurid theologian, jurist, astronomer, mathematician and physicist, who settled in the Ottoman Empire some time before 1472. As a disciple of Ulugh Beg, he is best known for the development of astronomical physics independent from natural philosophy, and for providing empirical evidence for the Earth's rotation in his treatise, Concerning the Supposed Dependence of Astronomy upon Philosophy. In addition to his contributions to Ulugh Beg's famous work Zij-i-Sultani and to the founding of Sahn-ı Seman Medrese, one of the first centers for the study of various traditional Islamic sciences in the Ottoman Empire, Ali Kuşçu was also the author of several scientific works and textbooks on astronomy.

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