Umberto Guidoni and Reinhold Ewald, are physicists and, which other occupation?
Umberto Guidoni Umberto Guidoni (born in Rome 18 August 1954) is an Italian astrophysicist, science writer and a former ESA astronaut, being the first European to visit the International Space Station. He is a veteran of two NASA space shuttle missions. He was also a Member of the European Parliament (MEP) from 2004 to 2009, elected within the Party of Italian Communists.
Richard Keith Ellis Richard Keith Ellis (born November 17, 1949) is a British theoretical physicist, at the University of Durham and a leading authority on perturbative Quantum Chromodynamics and Collider Phenomenology.