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Differentiating Astronomy and Astrology in Early Modern Europe

December 12, 2019,3:00 pm - 4:00 pm

Register for Free E-tickets


The lecture

If today there is a sharp distinction between astronomy, the science of stars, and astrology, using horoscopes to make prediction, that has not always been the case. Before the seventeenth century, the words astronomy and astrology were often used interchangeably, and most astronomers (for example, Ptolemy and Kepler) were also astrologers. Putting the two disciplines in opposition is essentially a construction of the seventeenth century.  However, the roots of the distinction are far older and can be traced back to medieval times, when ancient astronomical and astrological texts were first recovered. In this talk, we will examine how the distinction between astronomy and astrology had been puzzling scholars for centuries, and how a consensus was finally found in the early modern period. Behind this question of terminology lies the problem of distinguishing good and bad knowledge, and judging  the heritage of the past. It is a question about the bases and norms of scientific knowledge. It is a question about building boundaries in the intellectual world.

The speaker

Jean Sanchez is a PhD candidate at the École Normale Supérieure of Paris in history and philosophy of sciences.  At the Linda Hall Library, he is working on his current project, “Conceptions of astrology among Parisian scholars (1570-1680),” a history of the intellectual demarcation between science and superstition in the seventeenth century.

Admission tickets

The event is free and open to the public; however, e-tickets are required.

Live stream option

If you are unable to attend the lecture in person, you can watch a live broadcast from the Library’s Facebook page or via livestream.com


Parking is free in Library parking lots and along the west side of Holmes Street between 51st and 52nd streets. The main entrance to the Library grounds is on Cherry Street. The Linda Hall Library is not affiliated with UMKC. Parking in all UMKC lots is by permit or meter.


December 12, 2019
3:00 pm - 4:00 pm
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Eric Ward


Linda Hall Library
5109 Cherry
Kansas City, MO 64110 United States
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For reservation questions, please email events@lindahall.org or call 816.926.8772 to leave a message.

Contact Eric Ward at 816.926.8753 for more information on these events.