> Along with the Frenchman Robert Esnault-Pelterie, the Germans Hermann Oberth and Fritz von Opel, and the American Robert H. Goddard, he is one of the founding fathers of modern rocketry and astronautics.
Same as with aviation and some other fields, rocketry and astronautics has many "fathers", mostly because of nations stressing the contributions of their compatriots. Oberth can not only be claimed by Germany (where he studied and worked), but also by Romania (where the city where he was born and spent his formative years is located today, and where he also worked later) and potentially also Austria/Hungary (which the city was part of at the time he was born).
Same as with aviation and some other fields, rocketry and astronautics has many "fathers", mostly because of nations stressing the contributions of their compatriots. Oberth can not only be claimed by Germany (where he studied and worked), but also by Romania (where the city where he was born and spent his formative years is located today, and where he also worked later) and potentially also Austria/Hungary (which the city was part of at the time he was born).