Tycho Brahe in the context of "Johannes Kepler"

The Harmonia Macrocosmica is a star atlas written by Andreas Cellarius and published in 1660 by Johannes Janssonius. The first part of the atlas contains copper plate prints depicting the world systems of Claudius Ptolemy, Nicolaus Copernicus, and Tycho Brahe. At the end are star maps of the classical and further constellations, the latter ones as introduced by Julius Schiller in his Coelum stellatum christianum of 1627.

For its importance in the history of cartography, particularly of celestial cartography, the Harmonia Macrocosmica is considered one of the notable masterworks from the Golden Age of Dutch/Netherlandish cartography (c. 1570s–1670s), along with Abraham Ortelius's Theatrum Orbis Terrarum and Johannes Blaeu's Atlas Maior. It is often described as the most beautiful celestial atlas ever published.

SN 1572 (Tycho's Star, Tycho's Nova, Tycho's Supernova), or B Cassiopeiae (B Cas), was a supernova of Type Ia in the constellation Cassiopeia, one of eight supernovae visible to the naked eye in historical records. It appeared in early November 1572 and was independently discovered by many individuals.

Its supernova remnant has been observed optically but was first detected at radio wavelengths. It is often known as 3C 10, a radio-source designation, although increasingly as Tycho's supernova remnant.

The 16th century begins with the Julian year 1501 (MDI) and ends with either the Julian or the Gregorian year 1600 (MDC) (depending on the reckoning used; the Gregorian calendar introduced a lapse of 10 days in October 1582). The Habsburg Spanish Empire, Portuguese Empire, Ottoman Empire, Safavid Persia, Mughal India and Ming China were the most powerful and hegemonic states.

The Renaissance in Italy and Europe saw the emergence of important artists, authors and scientists, and led to the foundation of important subjects which include accounting and political science. Copernicus proposed the heliocentric universe, which was met with strong resistance, and Tycho Brahe refuted the theory of celestial spheres through observational measurement of the 1572 appearance of a Milky Way supernova. These events directly challenged the long-held notion of an immutable universe supported by Ptolemy and Aristotle, and led to major revolutions in astronomy and science. Galileo Galilei became a champion of the new sciences, invented the first thermometer and made substantial contributions in the fields of physics and astronomy, becoming a major figure in the Scientific Revolution in Europe.

Ven (Swedish: [veːn], older Swedish spelling Hven), is a Swedish island in the Öresund strait laying between Scania, Sweden and Zealand, Denmark. A part of Landskrona Municipality, Skåne County, the island has an area of 7.5 km (2.9 sq mi) and 371 inhabitants as of 2020. During the 1930s, the population was at its peak, with approximately 1,300 inhabitants. There are four villages on the island: Bäckviken, Tuna By, Norreborg and Kyrkbacken. The island is best known as the location of the observatories Uraniborg and Stjerneborg, both of which were established and operated by the Danish Renaissance astronomer Tycho Brahe.

Uraniborg was an astronomical observatory and alchemy laboratory established and operated by the Danish astronomer Tycho Brahe. It was the first custom-built observatory in modern Europe, and the last to be built without a telescope as its primary instrument.

Uraniborg was built c. 1576 – c. 1580 on Ven, an island in the Øresund between Zealand and Scania, Sweden, which was part of Denmark at the time. It was expanded with the underground facility Stjerneborg (Swedish: Stjärneborg) on an adjacent site.

Stjerneborg ("Star Castle" in English) was Tycho Brahe's underground observatory next to his palace-observatory Uraniborg, located on the island of Ven in the Öresund between Denmark and Sweden.

Tycho Brahe built it circa 1581. He wrote: "My purpose was partly to have placed some of the most important instruments securely and firmly in order that they should not be exposed to the disturbing influence of the wind, and should be easier to use, partly to separate my collaborators when there were several with me at the same time, and have some of them make observations in the castle itself, others in these cellars, in order that they should not get in the way of each other or compare their observations before I wanted this." He named it Stiernburg in vernacular or Stellæburgus in Latin. Both the Danish and Latin names mean "castle of the stars".

Leipzig University (German: Universität Leipzig), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 December 1409 by Frederick I, Elector of Saxony and his brother William II, Margrave of Meissen, and originally comprised the four scholastic faculties. Since its inception, the university has engaged in teaching and research for over 600 years without interruption.

Famous alumni include Angela Merkel, Gottfried Wilhelm von Leibniz, Johann Wolfgang von Goethe, Leopold von Ranke, Friedrich Nietzsche, Robert Schumann, Richard Wagner, Tycho Brahe, Georgius Agricola. The university is associated with ten Nobel laureates, most recently with Svante Pääbo who won the Nobel Prize for Medicine in 2022.