Sławosz Uznański

Sławosz Uznański, of Poland, is a scientist and engineer making significant contributions to the fields of science and space exploration. As a member of the European Space Agency’s (ESA) Astronaut Reserve Class of 2022, he emerged from a competitive pool of over 22,500 candidates, securing his place for future missions to the International Space Station (ISS) and beyond. Fluent in English and proficient in French, Sławosz brings a diverse linguistic background to his endeavors.

Sławosz’s educational journey began in Łódź, Poland, where he earned his M.Sc. with honors from Łódź University of Technology in 2008. His academic pursuits extended across borders, as he obtained another M.Sc. from Université de Nantes in France and a Diplôme d’Ingénieur from Polytech’Nantes in the same year. His expertise deepened further with a 2011 doctoral dissertation at the University of Aix-Marseille, focusing on radiation-tolerant designs for space applications.

Beyond academia, Sławosz made significant contributions at the European Organization for Nuclear Research (CERN) in Geneva. There, he served as a reliability expert and project lead. Notably, from 2018 to 2020, he assumed the critical role of Engineer in Charge for the Large Hadron Collider (LHC), overseeing its round-the-clock operations.

When not immersed in scientific pursuits, Sławosz seeks adventure. He tests his limits through high-altitude mountaineering expeditions, explores remote corners of the world, and enjoys sailing escapades. Whether in the lab or the great outdoors, Sławosz’s passion for exploration and discovery remains unwavering.

Sławosz has been assigned to Axiom Mission 4 (Ax-4) as mission specialist, pending international partner approval.

Fast Facts
Poland as photographed during Expedition 57 from onboard the International Space Station. Credit: NASA
View Media Kit