Are Ulf Merbold and Ernst Messerschmid both German?
Ulf Merbold: Dr. Ulf Dietrich Merbold (born June 20, 1941) is the first West German citizen and second German native (after Sigmund Jähn) to have flown in space. Ernst Messerschmid: Prof. Dr. Ernst Willi Messerschmid (born May 21, 1945) is a German physicist and former astronaut.
i don't know