Since its founding in 1891, many people have passed through the doors of the Vatican Observatory.  A quick perusal of our guestbook reveals several Names, including Popes, Nobel laureates, astronauts, actors, and saints. For the past few weeks, we have been highlighting visitors who came on the occasion of the first General Assembly of the International Astronomical Union. We have finally reached the last installment related to this event. Today’s visitors came between May 10 and 13, 1922. They are: Sotero Prieto, Joseph Baldwin, Paul Stroobant, Albertus Nijland, Hendrik Jan Heuvelink, and Count de la Baume Pluvinel. That red line underneath de la Baume Pluvinel indicates the end of visits related to the IAU meeting. Sotero Prieto Next to his name, Sotero Prieto Rodriguez (1884-1935) wrote, “(Profesor de Matemáticas – Universidad de Mexico) Tacubaya, Mexique” (Professor of Mathematics, University of Mexico, Tacubaya Mexico) In 1912, as a professor in the National School of Higher Studies (later the National University of … Continue reading →