In his De luce (on light) he extends it to the origin of the Universe in what has been referred to as the ‘Medieval Big Bang’.
Dissatisfied with the problems of the geocentric system inherited from Claudius Ptolemy, Nicholas Copernicus began the change from geocentrism to heliocentrism.
A Portal to the Universe: The Astrolabe as a Site of Exchange in Medieval and Early Modern Knowledge
This essay analyzes the astrolabe and its ability to transfer ideas and culture across traditional geographic boundaries, from the perspective of Europe in the Medieval and Early Modern eras.
Assessment of early-modern observations of comets and supernovae: Focus on pre-telescopic European astrometric and physical data
It will be worth while in this investigation to inquire whether comets have the same nature as the planets and stars … A comet seems to have certain things in common with them: rising and setting, the same appearance, although a comet is scattered and extends farther. It is also fiery and bright. And so, if all planets are earthy bodies, comets will also have the same condition. ~ Seneca
This article examines the changing political landscape of Medicean Florence, from Cosimo de’ Medici (1389-1464) to his grandson Lorenzo the Magnificent (1449-1492), through the letters of the celebrated neo-Platonist philosopher Marsilio Ficino (1433-99).
A detailed examination of the themes, motifs and secrets held with Michelagelo’s masterpiece.
The Astronomy of Levi ben Gerson (d.1344) is unusual for recording 45 observations he made of planetary longitudes and latitudes that are presented here for the first time.
Ideas in a thirteenth-century treatise on the nature of matter still resonate today, say Tom C. B. McLeish and colleagues.
This paper deals with the analysis of data obtained from observations of two sets of three lunar eclipses in the Late Medieval Islamic Period.
It seems there’s one fact about the Middle Ages that always seems to astound people: medieval people did not actually think the world was flat.
Galileo would have dearly loved to explain to his examiners how his observations made belief in the Copernican system more intellectually respectable even though he had no irrefutable proof of the Earth’s motion, but this was an opportunity he never got.
Here we discuss how some medieval scholars in the Western Europe viewed the form of the world and the problem of the Antipodes
In 1271, Kublai Khan founded the Bureau of Islamic Astronomy in Peking, which operated alongside the long-established Chinese Astronomical Bureau.
People in the Middle Ages asked what was the moon made of? How far away was it? Could it make my child vindictive? Here is what they found out.
Obviously, however, learned men of antiquity and the Middle Ages showed the greatest interest in such genuinely astronomical activities as the observation of the skies, of the heavenly bodies and of their movements, positions, orbits, and anomalies.
Observational Archaeoastronomy at Stonehenge: Winter and Summer Solstice Sun Rise and Set Alignments Accurate to 0.2 o in 4000 BP
Our studies since 1980 of Solstice and Equalnight Sun Rise and Set alignments at an ancient site in southern Alberta, the Majorville Medicine Wheel Complex (MMWC), have drawn our attention to Stonehenge (Atkinson 1979; Burl 1976, 1993). While there might have been no ideological or religious similarities between societies in North America and Britain 5000 years ago, we know of no evidence that there was not. Indeed, Sun worship was world-wide at that time.
One of the most persistent theories has been that he died of mercury poisoning, either because he voluntarily ingested large quantities of mercury for medicinal purposes, or because mercury was used to poison him.
This paper presents a hands-on introduction to the medieval astrolabe, based around a working model which can be constructed from photocopies of the supplied ﬁgures.
In ancient times, the births and deaths of leaders or dignitaries were often supposed to be associated with celestial omens. However, Islamic theology does not accept that eclipses are indications of events on earth.
To a modern cartographer a map should represent geographic reality by means of coordinates such as latitude and longitude. Not one of the cartographic images in the Liber Floridus corresponds to this definition, yet not a single work on historical cartography omits the early-twelfth-century encyclopaedia
Instruments and demonstrations in the astrological curriculum: evidence from the University of Vienna, 1500–1530
The University of Vienna presents something of a puzzle for his- torians of astronomy and astrology. During the fifteenth century the university was alma mater to Johannes de Gmunden, Georg von Peuerbach, and Johannes Regiomontanus, who were central to developments in astronomy and astrology throughout Europe. Yet there is little evidence of advanced instruction in astronomy or astrology by any of these masters.
But was there any real science in those tumultuous times?