Ali Kuşçu, Renowned Scholar, Astronomer, and Mathematician
Life and Family
Although the exact place and date of Ali Kuşçu’s birth are unknown, it is believed that he was born in Samarkand in the early fifteenth century. He acquired the epithet “Kuşçu” because his father worked as a falconer in the court of Ulugh Beg, within the Timurid Empire, one of the leading scientific centers of the era. From an early age, Ali Kuşçu developed an interest in science.
Ali Kuşçu received training in astronomy and mathematics at a young age, studying under prominent scholars of the time such as Bursalı Kadızâde Rûmî, Gıyaseddin Cemşid, and Muînüddîn Kâşî. To deepen his knowledge, he traveled to Kerman, where he authored the works “Hall-ü Eşkâl-i Kamer” (Explanation of the Phases of the Moon) and “Şerh-i Tecrid”.
Samarkand Observatory and Scientific Work
After completing his education, he returned to Samarkand and took up a position at the Samarkand Observatory, established by Ulugh Beg. This observatory was among the most advanced of its time, and there he conducted significant astronomical calculations by studying the heavens.

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Move to the Ottoman Empire and Work in Istanbul
After Ulugh Beg’s death in 1449, Ali Kuşçu entered the service of Akkoyunlu ruler Uzun Hasan. Uzun Hasan sent him as an envoy to Ottoman Sultan Fatih Sultan Mehmet. Following his diplomatic mission, Ali Kuşçu settled in Istanbul at the invitation of Fatih Sultan Mehmet.
In Istanbul, he was appointed chief professor at the Sahn-ı Seman Medresesi, where he trained numerous students and made significant contributions to the dissemination of scientific knowledge.
Scientific Contributions
Ali Kuşçu made important contributions to the world of science.
The astronomical tables he prepared were used at the University of Oxford for approximately 200 years. Additionally, NASA honored his contributions to science by naming a region on the Moon after him.

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