An ESA profile of Greek physician Adrianos Golemis traces his path from space medicine to the European Astronaut Corps. According to the profile, he joined ESA's Space Medicine Team at the European Astronaut Centre in Cologne in 2013 as a postgraduate intern.

Between 2013 and 2015, the profile says, he spent 14 months at the Concordia station in Antarctica, supporting European research on human physiology and psychology in isolated and extreme environments. It adds that he later worked at MEDES, the French institute of space medicine and physiology, on bed-rest and dry immersion studies, and served as a mission physician for ESA astronauts from 2018 to 2024, becoming head of mission physicians from 2024 to 2026.

The agency states that on 1 September 2026 he joined the European Astronaut Corps as an ESA Project Astronaut, following an agreement signed by ESA and Vast on Greece's behalf to support a future astronaut mission. It describes him as the first Greek citizen to begin astronaut training at the European Astronaut Centre and says he is preparing for a future mission in low Earth orbit.