In January 1417 Poggio Bracciolini discovered #DeRerumNatura (written by #Lucretius in the 1st century BC outlining #Epicureanism) in a German monastic library.

That copy was copied from an earlier 9th century text corrected by an Irish monk, #Dúngal.

Dúngal also wrote a book explaining to #Charlemagne how two solar eclipses could occur in the same year, and, incidentally, the structure of the #cosmos as he understood it.

https://www.irishphilosophy.com/2016/06/26/dungal/

#IrishPhilosophy #HistoryOfScience