Claude Nicollier is a Swiss astronaut and astrophysicist, born on September 2, 1944. He is known for being the first Swiss citizen to travel to space. Nicollier flew on four Space Shuttle missions between 1992 and 1999, contributing to various scientific experiments and the construction of the International Space Station. In addition to his work as an astronaut, Nicollier has a background in engineering and has held academic positions. He has also been involved in promoting space exploration and education in Switzerland, inspiring future generations to pursue careers in science and technology.