Who is an astrophysicist for the European Space Agency, Dirk Frimout or Georgi Ivanov?
Dirk Frimout Dirk Dries David Damiaan, Viscount Frimout (born 21 March 1941 in Poperinge, Belgium) is an astrophysicist for the European Space Agency. He flew aboard NASA Space Shuttle mision STS-45 as a payload specialist , making him the first Belgian in space .
Martin Schwarzschild Martin Schwarzschild (May 31, 1912 – April 10, 1997) was a German-born American astrophysicist. He was the son of German physicist Karl Schwarzschild and the nephew of the Swiss astrophysicist Robert Emden.