One of the world’s oldest sciences is on full display in the rafters and rooftops above Saint Catherine’s Church, the oldest church in Gdańsk, Poland. Horology, the science of measuring time, has a place in this ancient city thanks to one of its leading beer brewers, politicians, academics, and inventors: Jan Hevelius. While Hevelius was a town councilor of the important maritime city, his primary interest was in astronomy and horology. Of his many academic contributions to the sciences, he is known as the founder of lunar topography, observing sunspots…
