Father Johann Georg Hagen, S.J. (1847-1930)
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Father Johann Georg Hagen, S.J. (1847-1930) was Professor of Astronomy and Director of the Observatory at Georgetown University for 26 years. In 1906, he moved to Rome, at the request of Pope Pius X, to become director of the Vatican Observatory (Specola vaticana).
Smithsonian Institution Archives, Accession 90-105, Science Service Records, Image No. SIA2008-3206
Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520
SIA Acc. 90-105 [SIA2008-3206]
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