 | Dr. Ulf Dietrich Merbold is the first West German citizen and second German native to have flown... more » |
 | Prof. Dr. Dr. h.c. Ulrich Hans Walter is a German physicist/engineer and a former DFVLR... more » |
 | Umberto Guidoni is an Italian politician and a former ESA astronaut. He is a veteran of two NASA... more » |
