Tycho Brahe Tycho Brahe Tycho Brahe (; born Tyge Ottesen Brahe; 14 December 154624 October 1601) was a Danish nobleman, astronomer, and writer known for his accurate and comprehensive astronomical and planetary observations. He was born in the then Danish peninsula of Scania. Well known in his lifetime as an astronomer, astrologer and alchemist, he has been described as "the first competent mind in modern astronomy to feel ardently the passion for exact empirical facts." His observations were some five times more accurate than the best available observations at the time. An heir to several of Denmark's principal noble families, he received
Tycho Brahe days The Coligny calendar also identifies certain calendar dates as lucky or unlucky, and the Roman "fasti" marks many days and parts of others as "dies nefasti", unsuited for the conduct of public business. Contemporary North America preserves a tradition that Friday the 13th is an unlucky day. It has been called a "pervasive form of divination" that "is found in all societies which regulate their days and nights in calendric systems." The received idea concerning the origin of Tycho Brahe days was that "Tycho Brahe, the celebrated Danish astronomer of the sixteenth and seventeenth centuries, was very superstitious, considering certain