Hans Schlegel

Hans Wilhelm Schlegel is a German physicist, an ESA astronaut, and a veteran of two NASA Space Shuttle missions.

Schlegel, born and raised in Germany, graduated as an international exchange student from Lewis Central High School in Council Bluffs, Iowa and Hansa Gymnasium in cologne before studying physics at RWTH Aachen University in his home country. After having received his university degree, he conducted research in semiconductor physics before being trained as an astronaut in the late 1980s by the German Aerospace Center . He flew as a DLR payload specialist in 1993 aboard Space Shuttle mission STS55, which included the Germansponsored Spacelab D2 research module.

Source: Wikipedia