There is speculation that Regiomontanus had arrived at a theory of heliocentrism before he died ; a manuscript shows particular attention to the heliocentric theory of the Pythagorean Aristarchus, mention was also given to the motion of the earth in a letter to a friend.

Between 1471-75, as a pupil ( real or supposed ) of the astronomer Regiomontanus ( Johannes Müller von Königsberg of Königsberg in Franconia ), who died in 1476, he became linked to cosmography and cartography, resulting in an invitation from King John to a council on navigation in 1483, led by Abraham Zacuto.

This treatise later had a " strong influence on European mathematics ", and his " definition of ratios as numbers " and " method of solving a spherical triangle when all sides are unknown " are likely to have influenced Regiomontanus.

He had Regiomontanus attempt the first sanctioned reorganization of the Julian calendar and increased the size and prestige of the papal chapel choir, bringing singers and some prominent composers ( Gaspar van Weerbeke, Marbrianus de Orto, and Bertrandus Vaqueras ) to Rome from the North.

Johannes Müller von Königsberg ( 6 June 1436 – 6 July 1476 ), today best known by his Latin toponym Regiomontanus, was a German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop.

* July 6 – Regiomontanus, German astronomer ( b. 1436 )

* June 6 – Regiomontanus, German astronomer ( d. 1476 )

* Irmela Bues, Johannes Regiomontanus ( 1436 – 1476 ).

* Johannes Müller von Königsberg ( 1436 – 1476 ), known as Regiomontanus, German mathematician and astronomer

The name Regiomontanus was first coined by Phillip Melanchthon in 1534, fifty-eight years after his death.

The crater Regiomontanus on the Moon is named after him.

He carried his enquiries so far into the occult sciences of abstruse and hidden nature, that, after having given most ample proofs, by his writings concerning physiognomy, geomancy, and chiromancy, he moved on to the study of philosophy, physics, and astrology ; which studies proved so advantageous to him, that, not to speak of the two first, which introduced him to all the popes of his time, and acquired him a reputation among learned men, it is certain that he was a great master in the latter, which appears not only by the astronomical figures he had painted in the great hall of the palace at Padua, and the translations he made of the books of the most learned rabbi Abraham Aben Ezra, added to those he himself composed on critical days, and the improvement of astronomy, but by the testimony of the renowned mathematician Regiomontanus, who made a fine panegyric on him, in quality of an astrologer, in the oration he delivered publicly at Padua when he explained there the book of Alfraganus.

Peuerbach accepted the invitation on the condition that Regiomontanus could also accompany them.

On his death bed Peuerbach made Regiomontanus promise to finish the book and publish it.

In 1461 Regiomontanus left Vienna with Bessarion and spent the next four years travelling around Northern Italy as a member of Bessarion's household, looking for and copying mathematical and astronomical manuscripts for Bessarion, who possessed the largest private library in Europe at the time.

Regiomontanus also made the acquaintance of the leading Italian mathematicians of the age such as Giovanni Bianchini and Paolo dal Pozzo Toscanelli who had also been friends of Peuerbach during his prolonged stay in Italy more than twenty years earlier.

Contrary to popular belief there is no evidence that Regiomontanus ever erected an observatory, however he did found the world's first scientific printing press and in 1472 he published the first printed astronomical textbook, the Theoricae novae Planetarum of his teacher Georg von Peurbach.

According to a rumor repeated by Gassendi in his Regiomontanus biography he was assassinated by relatives of George of Trebizond whom he had criticized in his writings.

A prolific author, Regiomontanus was internationally famous in his lifetime.

Nicolaus Copernicus ' teacher, Domenico Maria Novara da Ferrara, referred to Regiomontanus as having been his own teacher.

In 1561, Daniel Santbech compiled a collected edition of the works of Regiomontanus, De triangulis planis et sphaericis libri quinque ( first published in 1533 ) and Compositio tabularum sinum recto, as well as Santbech's own Problematum astronomicorum et geometricorum sectiones septem.

Regiomontanus designed his own system in the 15th century, which was one of the most popular systems in Europe in its time.

Much of the material on spherical trigonometry in Regiomontanus ' On Triangles was taken directly and without credit from the twelfth-century work of Jabir ibn Aflah otherwise known as Geber, as noted in the sixteenth century by Gerolamo Cardano.

* Rudolf Mett: Regiomontanus.

* Polybiblio: Regiomontanus, Johannes / Santbech, Daniel, ed.

* Online Galleries, History of Science Collections, University of Oklahoma Libraries High resolution images of works by and / or portraits of Regiomontanus in. jpg and. tiff format.

Albert was well versed in Georg von Peuerbach's Theory of the Planets and Regiomontanus ' Astronomical Tables.

The works of Anderson amount to six thin quarto volumes, and as the last of them was published in 1619, it is probable that the author died soon after that year, but the precise date is unknown.

The dates of his birth and death are uncertain, but he was probably born before 1050 and died on 12 October of an unknown year ( Possibly 1081, latest 1085 ).

Mansur hoped to establish a Transcaucasus Islamic state under shari ' a law, but was unable to fully achieve this because in the course of the war he was wounded and captured, and for unknown reasons, died.

Domnall died, either at the palace of Cinnbelachoir ( location unknown ), or at Rathinveralmond ( also unknown, and may be the same place, presumed to be near the junction of the Almond and the Tay, near Scone ).

On October 7, 1849, at age 40, Poe died in Baltimore ; the cause of his death is unknown and has been variously attributed to alcohol, brain congestion, cholera, drugs, heart disease, rabies, suicide, tuberculosis, and other agents.

He died six days later, of unknown causes, at King's Place, Hackney, and was buried on 6 July in the parish church of St. Augustine.

Gutenberg died in 1468 and was buried in the Franciscan church at Mainz, his contributions largely unknown.

The exact judgment of the Emperor is unknown, but it's certain that the sentence wasn't carried out because he died a few weeks after the Diet.

All indications suggest that the person died because of this projectile ; whether by intention or by accident is unknown.

Oxfordians see a parallel with Oxford's life, as his father died at the age of 46 on 3 August 1562, although not before making a will six days earlier, and his stepmother remarried within 15 months, although exactly when is unknown.

He died after a short bout with an unknown illness on 22 June 1276.

Mary Edison died at age 29 on August 9, 1884, of unknown causes: possibly from a brain tumor or a morphine overdose.

* date unknown – King Rudolph I of Burgundy ( died 912 )

# 166v: Herr Walther von Metze ( died before 1276, otherwise unknown )

* Margaret ( after 1268 – c. 1276 ), died in infancy of unknown causes.

Bonny died in prison, while Read's fate is unknown.

On 11 March 1893, after experiencing painful spasms for two hours, she died with Arthur holding her hand, of an unknown disease, perhaps tuberculosis, although the symptoms fit a heart attack also.

All but six of the personnel have died suddenly, due to unknown forces released by an experiment operating within the newly-discovered magneto-gravitic or electro-gravitic spectra.

Eadwig died at a young age in 959, in circumstances which remain unknown.

The exact fate of the so-called Princes in the Tower has been long debated ; whether they died, disappeared, or were murdered is still unknown.

From his first marriage he had two children: a son and a daughter, both unknown ; the son apparently died young and the daughter married Philipp Christian von Kleinberg, but both spouses died in 1743.

In those days its cause and treatment were unknown, and it was often fatal — up to 30 % of infected people died.