Tycho Brahe, Uraniborg Observatory

Tychonis Brahe Dani Epistolarum astronomicarum libri, 1601. This volume contains correspondence in Latin and German with Landgrave Wilhelm and his astronomer Christopher Rothmann. Tycho Brahe (December 14, 1546 - October 24, 1601) was a Danish astronomer and alchemist. As a student in Copenhagen, Tycho Brahe realized the difficulty of making accurate measurements of celestial bodies with the instruments of the day. His designs for new methods and devices won him great fame. He was granted an estate on the island of Hven to conduct his research, and funding to built the Uraniborg observatory. As an astronomer he worked to combine the geometrical benefits of the Copernican system with the philosophical benefits of the Ptolemaic system into his own model of the universe, the Tychonic system. He was the last of the major naked eye astronomers, working without telescopes for his observations. Tycho is credited with the most accurate astronomical observations of his time, and the data was used by his assistant, Johannes Kepler, to derive the laws of planetary motion. Due to a dueling injury at university, he always wore a metal nose prosthetic. In mid October of 1601 he contracted a bladder or kidney ailment after attending a banquet and died eleven days later at the age of 54

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LOC/Rare Book Selections/Science Source/Mary Evans