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
Jørgen Thygesen Brahe Jørgen Thygesen Brahe Jørgen Thygesen Brahe ("Jørgen Brahe til Tostrup i Skåne") (1515 – June 21, 1565) was a member of the Danish nobility. He was the son of Thyge Axelsen Brahe til Tostrup, Danish Councillor. He was also the uncle of the astronomer Tycho Brahe whom he raised after adopting him when Tycho was two and gave an education. He was married to Inger Johansdatter Oxe, sister of Peder Oxe, Steward of the Realm. Jørgen inherited considerable wealth from his parents, which in terms of the social structure of the time made him eligible for a royal appointment as