Our teacher Bardi delivered a talk on the astronomer Johannes Müller von Königsberg (1436–1476), better known as Regiomontanus, active in Germany, Italy, and Hungary. After presenting the outcomes of his latest research journal article (published in Centaurus. Journal of the European Society for the History of Science, 2022), Bardi shared his ideas on new research paths, derived from his research. Regiomontanus is widely considered as the most influential astronomer and mathematician of fifteenth-century Europe, an essential figure towards the “scientific revolution” for his critical engagement with the problems of the astronomy of his age, and one of the first scientist to use the printing press to spread scientific knowledge. Interestingly, he was active not only as a mathematician, but also as an astrologer, and he himself deemed astrology to be the queen of mathematical sciences. Bardi thus explained the distinction between astronomy and astrology to the audience. However, Regiomontanus's astrological activity has yet to be fully explored. Bardi studied an unconventional astrological-chiromantical text, whose relevance is threefold: a) it sheds new light on Regiomontanus's astrological interests; b) it enriches our knowledge of Regiomontanus's endeavors efforts to learn and understand Greek, because Regiomontanus transcribed it into his own manuscript during his sojourn in Italy (from 1460–1467) ; and c) it is the sole extant text in the Greek tradition that provides a system for prognostication from the study of a person's hand, whose the parts of which are considered as being under the domain of planets. Bardi made therefore an English translation of Regiomontanus's transcription, alongside a brief commentary, and his talk illustrated the intellectual- and historical context of that production through manuscript analysis. Moreover, Bardi’s examination of Regiomontanus manuscripts offers new insights on possible further research on how astronomy and astrology are connected, and thus essential, to understand the transformation mathematical sciences underwent in fifteenth-century Europe. He is therefore planning to translate his research outcomes in Chinese.