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German astrophysicist and space visionary professor Hermann Oberth . News Photo1970-1979,Archival,Black And White,German Culture,Germany,Headshot,Human Interest,Ideas,Males,People,Professor,Science and Technology,Space,Space Mission,VerticalPhotographer Collection: Hulton Archive circa 1974: German astrophysicist and space visionary professor Hermann Oberth (1894-1990). (Photo by Keystone/Getty Images)