Presenters
Jon is an independent historian of pre-telescopic astronomy. His primary area of interest is the development of the geocentric model as laid out in Claudius Ptolemy's 2nd century "Almagest". He has a BS in Astronomy from the University of Kansas and runs the YouTube channel @Astr...
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Sunday August 17, 2025 3:45pm - 4:45pm
CDT
Regency A