Tycho Brahe produce much of his astronomical data, Tycho relied heavily on the then new technique of "prosthaphaeresis", an algorithm for approximating products based on trigonometric identities that predated logarithms. Although Tycho admired Copernicus and was the first to teach his theory in Denmark, he was unable to reconcile Copernican theory with the basic laws of Aristotelian physics, that he considered to be foundational. He was also critical of the observational data that Copernicus built his theory on, which he correctly considered to have a high margin of error. Instead, Tycho proposed a "geo-heliocentric" system in which the Sun and Moon orbited
Count's Feud and thus became a grandfather in 1546 to the perhaps most famous Scanian of the era, the astronomer Tyge Brahe, better known as Tycho Brahe. Tycho Brahe's paternal grandfather, whom he was named after, Tyge Brahe of Tosterup in eastern Skåne, was killed 7 September 1523 during the siege of Malmø, fighting for Frederick I. Axel Brahe, the brother of the older Tyge Brahe, served as governor of Scania for a long period, and was one of the first to convert to Lutheranism. In contrast, the consequences of the peasant uprising cost all parties dearly. Many were forced to purchase