Nasir al-Din al-Tusi
Persian astronomer (1201-1274) · Scientists · Died at 73
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Something wrong?A 13th-century Persian polymath who built the math underneath the stars. Al-Tusi wrote the planetary tables that guided astronomy for centuries and is credited with founding trigonometry as its own discipline - work some believe later nudged Copernicus toward heliocentrism.
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About this person
Born Muhammad ibn Muhammad ibn al-Hasan al-Tusi in 1201, he ranged across disciplines most scholars kept separate: philosophy, medicine, theology, engineering, prose, mysticism. His strides in logic, biology, and chemistry were real, but astronomy was where he left the deepest mark. Al-Tusi produced extraordinarily accurate tables of planetary motion, updated the planetary model, and dismantled parts of Ptolemaic orthodoxy with precision critiques. In mathematics he pushed trigonometry past borrowed tool into standalone field. Ibn Khaldun, writing decades after al-Tusi's death in 1274, called him the greatest of the later Persian scholars. The ghost of his planetary work may have reached Copernicus centuries on.
Scientists born in the 1200s 2
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