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ANGELA PISKERNIK HERMAN POTOCNIK NOORDUNG PISKERNIK’S PRESCRIPTION GLASSES from the 1960s. Archives of the Republic of Slovenia.Photo: Nebojša Tejić, STA . TO SPACE AND BACK This copy of Potočnik’s book with a crit- ical introduction is a symbol of the integra- tion of his foundational ideas following his death: Russian cosmonauts took it to the In- ternational Space Station, currently the only human settlement not on planet Earth, and it was published by the Cultural Centre of Euro- pean Space Technologies (KSEVT), which con- tinues to develop Potočnik’s ideas. Cultural Centre of European Space Technologies. Photo: Nebojša Tejić, STA. THE IDENTIFICATION KEY for flowering plants and ferns, 1941. Slovenian Museum of Natural History. Photo: Nebojša Tejić, STA FRIDERIK (FRITZ) PREGL . PREGL’S MICROANALYSIS DEVICE. In the Angela Piskernik’s herbarium from 1949. Slovenian Museum of Natural History. Photo: Nebojša Tejić, STA 100 . past, questions were raised as regards Pregl’s attitude to Slovenian culture. But it is indis- putable that he expressed gratitude to the