Herman Potočnik was Austro-Hungarian Army officer, electrical engineer and astronautics theorist. He is regarded as an early theorist of modern space flight and is remembered mainly for his work concerning the long-term human habitation of space.
Herman Potočnik
Description of a space station in Hermann Noordung's The Problem of Space Travel (1929). (Legend: Achs-Körper: axle body. Aufzugschacht: elevator shaft. K: electric cable to an external observatory. Kondensatorrohre: condenser pipes. S: airlock. Treppenschacht: stairwell. Verdampfungsrohr: boiler pipe).
The space station Wohnrad (Living Wheel).
Styria, also Slovenian Styria or Lower Styria, is a traditional region in northeastern Slovenia, comprising the southern third of the former Duchy of Styria. The population of Styria in its historical boundaries amounts to around 705,000 inhabitants, or 34.5% of the population of Slovenia. The largest city is Maribor.
Typical Lower Styrian landscape in Sevnica.
Maribor
Ptuj
Celje