Giovanni Antonio Magini (June 13, 1555 - February 11, 1617) was an Italian astronomer, astrologer, cartographer, and mathematician. Born in Padua, he completed his studies in philosophy in Bologna in 1579. In 1588 he was chosen over Galileo Galilei as the chair of mathematics at the University of Bologna after the death of Egnatio Danti.Magini was a prolific writer, putting forth theories of celestial motion (he was a supporter of a geocentric solar system), the use of quadrants in surveying and astronomy, and trigonometry. In cartography, his life’s work was the Atlante geografico d’Italia, published posthumously by his son in 1620. This work was intended to include maps of every Italian region with exact nomenclature and historical notes. He was also very interested in topics that would be considered pseudoscientific today, particularly astrology (he served as court astrologer for the Duke of Mantua) and metoposcopy.