oa South African Journal of Science - Doubling the age and size of the universe at the IAU in Rome in 1952 : contributions by David Thackeray, Walter Baade and Harlow Shapley - scientific correspondence

Volume 116 Number 1-2
  • ISSN : 0038-2353
  • E-ISSN: 1996-7489



In September 1952, the International Astronomical Union (IAU) met in Rome. The meeting was attended by 430 astronomers from 34 countries.1 The inaugural ceremony took place in the historic palace at the Campidoglio on the Capitoline hill, and sessions were held in the building of the National Research Council near the Cittá Universitaria. The Vatican Observatory at Castel Gondolfo was visited in the course of the conference, and the delegates were addressed by Pope Pius XII.

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