Tycho Brahe

Also found in: Dictionary, Thesaurus, Wikipedia.
Related to Tycho Brahe: Johannes Kepler, Galileo Galilei
Tycho Ottesen Brahe
BirthplaceKnutstorp Castle, Scania, Denmark, Denmark–Norway
Nobleman, Astronomer

Brahe, Tycho

(tī`kō brä), 1546–1601, Danish astronomer. The most prominent astronomer of the late 16th cent., he paved the way for future discoveries by improving instruments and by his precision in fixing the positions of planets and stars. From Brahe's exact observations of the planets, Kepler devised his laws of planetary motions (see Kepler's lawsKepler's laws,
three mathematical statements formulated by the German astronomer Johannes Kepler that accurately describe the revolutions of the planets around the sun. Kepler's laws opened the way for the development of celestial mechanics, i.e.
..... Click the link for more information.
). Brahe's achievements included the study of a supernova (first observed in 1572 and now known as Tycho's supernova) in the constellation Cassiopeia and the discoveries of a variation in the inclination of the lunar orbit and of the fourth inequality of the moon's motion. He never fully accepted the Copernican system but made a compromise between it and the Ptolemaic system. In the Tychonic system, the earth was the immobile body around which the sun revolved, and the five planets then known revolved around the sun. Given funds by the Danish king Frederick II, Brahe built on the island of Ven a castle, Uranienborg, and an observatory, Stjarneborg. He was deprived of his revenues by Christian IV in 1596 and left Ven (1597); in 1599 he settled near Prague under the patronage of the German emperor Rudolf II. He published (1588) De mundi aetherii recentioribus phaenomenis, the second volume of a projected three-volume work on his astronomical observations; from an incomplete manuscript and notes Kepler edited Volume I, Astronomiae instauratae progymnasmata (1602). Brahe's Astronomiae instauratae mechanica (1598) contained his autobiography and a description of his instruments.


See biographies by J. L. Dreyer (1890, repr. 1963) and J. A. Gade (1947).

Tycho Brahe:

see Brahe, TychoBrahe, Tycho
, 1546–1601, Danish astronomer. The most prominent astronomer of the late 16th cent., he paved the way for future discoveries by improving instruments and by his precision in fixing the positions of planets and stars.
..... Click the link for more information.
Enlarge picture
An engraving of the great astronomer Tycho Brahe by Gheyn near the end of the sixteenth century. Reproduced by permission of Fortean Picture Library.

Brahe, Tycho

(religion, spiritualism, and occult)

Tycho Brahe, an eminent Danish astronomer and astrologer, was born April 13, 1546, in Kundstorp, Denmark. He taught astronomy at the University of Copenhagen and established an observatory on the island of Hven under the patronage of King Frederick II. Brahe moved to Prague, Czechoslovakia, after the king’s death, where he took Johannes Kepler as his assistant.

Dissatisfied with inexactness of most existing observations of the celestial bodies, Brahe designed instruments that enabled him to make the most precise observations of the heavens to be recorded prior to the invention of the telescope, and he discovered the phenomenon of exploding novas. (The accuracy of Brahe’s observations enabled Kepler to discover some of the laws governing planetary motions.) Brahe was also a mundane astrologer. He contributed to aspect theory and did work on the connection between the natural cataclysms and conjunctions. He died October 21, 1601, in Prague.


Brau, Jean-Louis, Helen Weaver, and Allan Edmands. Larousse Encyclopedia of Astrology. New York: New American Library, 1980.
Kitson, Annabella, ed. History and Astrology: Clio and Urania Confer. London: Mandala, 1989.

Brahe, Tycho


Born Dec. 14, 1546, in Knudstrup; died Oct. 13, 1601, in Prague. Danish astronomer.

In 1572, Tycho observed a new star in the constellation Cassiopeia. From 1576 to 1597 he directed the Uraniborg Observatory, which he built on the island of Hven in Øresund Strait near Copenhagen and equipped with excellent instruments made under his supervision. He spent 21 years there observing the stars, planets, and comets and determining the positions of heavenly bodies with a very high degree of accuracy. This was his main contribution. He also discovered two inequalities in the motion of the moon (annual inequality and variation). He demonstrated that comets are heavenly bodies farther from the earth than the moon. He compiled refraction tables. Tycho did not accept the heliocentric system of the world; in its place he proposed another system (that the sun moves around the earth, the earth stands in the center of the universe, and the planets revolve around the sun); this was an unsuccessful combination of Ptolemy’s teaching and the Copernican system. In 1597, Tycho was forced to leave Denmark (the Uraniborg Observatory was abandoned after his departure); and after spending two years in Germany, he went to Prague, where J. Kepler became his assistant. Kepler was left very valuable observations after Tycho’s death. Based on these observations, Kepler formulated his famous laws of the motion of the planets.


Opera omnia, vols. 1–15. Edited by J. L. E. Dreyer. Copenhagen, 1913–29.


Berry, A. Kratkaia istoriia astronomii, 2nd ed. Moscow-Leningrad, 1946. (Translated from English.)
Dreyer, J. L. E. Tycho Brahe. Edinburgh, 1890.
Tycho Brahe’s Description of His Instruments and Scientific Work. Translated and edited by H. Raeder (and others). Copenhagen, 1946.
References in periodicals archive ?
Las novas y cometas son relevantes no solo porque fueron fenomenos celestes imprevistos, sino, ademas, porque fueron estudiados por una nueva comunidad internacional de cientificos capaz ya de resumir, concentrar y comunicar sus hallazgos en publicaciones fundamentales como la coleccion de tratados sobre la nova, Progymnasmata (1602) de Tycho Brahe.
This latter distance Tycho Brahe supposed to be 1150 times the semi-diameter of the earth, and the sun about 180 times as great as the earth.
A diferencia de Tycho Brahe, Kepler estaba convencido de que las grandes variaciones en la capacidad visual de cada observador individual hacian imposible establecer las tablas astronomicas correctas.
In 1576, Tycho Brahe laid the foundation stone of Uraniborg, a research institute on the small Danish island of Hven.
Poe's footnotes to the poem explain the dual sense in which the title is to be taken: as a reference to an intermediate state between heaven and hell in Islamic theology and as a reference to a star (perhaps a supernova) observed by Tycho Brahe that achieved great brilliancy only to disappear.
The Tycho Brahe 1 rocket was ready on the launch pad at sea near Bornholm but when the count-down finished it did not take off.
Tycho Brahe, Noel Duret, John Greaves, Joseph Solomon Delmedigo, and Taqi al-Din are among those whose careers, travels, and scientific quests are described.
Tonight's opener about astronomy is packed with little details that bring the heavens down to earth - like Tycho Brahe, who spent years painstakingly recording planets.
Beginning with Copernicus's death in 1543, the film depicts the scientific achievements of Tycho Brahe, Giordano Bruno, Johannes Kepler, Galileo Galilee, Isaac Newton, and Edmond Halley.
Featured authors include pioneering astronomers Tycho Brahe and Johannes Kepler.
1572 Tycho Brahe registra la aparicion de una <<estrella nueva>> en la constelacion de Casiopea.
The online resource will carry more than 2,000 titles, including high-resolution colour facsimile images of all the Royal Library's Danish imprints, from the earliest works--Breviarium Othoniense and Guilelmus Caorsin's Obsidionis Rhodiae urbis descriptio, printed by Johann Snel in Odense in 1482--through to works by the astronomer and alchemist Tycho Brahe (1546-1601) produced on his press at Uranienborg on the island of Hven before 1597.