He later worked underground at Stjerneborg, where he discovered that his instruments in Uraniborg were not sufficiently steady. King Frederick II granted Tycho an estate on the island of Hven and the funding to build Uraniborg, an early research institute, where he built large astronomical instruments and took many careful measurements. Using similar measurements, he showed that comets were also not atmospheric phenomena, as previously thought, and must pass through the supposedly immutable celestial spheres. His precise measurements indicated that "new stars" (stellae novae, now known as supernovae), in particular that of 1572 ( SN 1572), lacked the parallax expected in sublunar phenomena and were therefore not tailless comets in the atmosphere as previously believed but were above the atmosphere and beyond the Moon. In his De nova stella ( On the New Star) of 1573, he refuted the Aristotelian belief in an unchanging celestial realm. Furthermore, he was the last of the major astronomers to work without the aid of telescopes for his observations.
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His system correctly saw the Moon as orbiting Earth, and the planets as orbiting the Sun, but erroneously considered the Sun to be orbiting the Earth. As an astronomer, Tycho worked to combine what he saw as the geometrical benefits of Copernican heliocentrism with the philosophical benefits of the Ptolemaic system into his own model of the universe, the Tychonic system. He took an interest in astronomy and in the creation of more accurate instruments of measurement. Most of his observations were more accurate than the best available observations at the time.Īn heir to several of Denmark's principal noble families, Tycho received a comprehensive education. He has been described as "the first competent mind in modern astronomy to feel ardently the passion for exact empirical facts". Tycho was well known in his lifetime as an astronomer, astrologer, and alchemist. He was born in the then-Danish peninsula of Scania, which became part of Sweden the century afterwards. Tycho Brahe ( / ˈ t aɪ k oʊ ˈ b r ɑː( h i), - ˈ b r ɑː( h) ə/ TY-koh BRAH(-hee) - BRAH-(h)ə born Tyge Ottesen Brahe 14 December 1546 – 24 October 1601) was a Danish astronomer, known for his accurate and comprehensive astronomical observations.
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Prague, Habsburg Bohemia, Holy Roman Empire