J%C3%BCrgen Ehlers
Jrgen Ehlers was a German physicist who contributed to the understanding of Albert Einsteins theory of general relativity. From graduate and postgraduate work in Pascual Jordans relativity research group at Hamburg University, he held various posts as a lecturer and, later, as a professor before joining the Max Planck Institute for Astrophysics in Munich as a director. In 1995, he became the founding director of the newly created Max Planck Institute for Gravitational Physics in Potsdam, Germany.
Jrgen Ehlers was born in Hamburg. He attended public schools from 1936 to 1949, and then went on to study physics, mathematics and philosophy at Hamburg University from 1949 to 1955. In the winter term of 195556, he passed the high school teachers examination , but instead of becoming a teacher undertook graduate research with Pascual Jordan, who acted as his thesis advisor. Ehlers doctoral work was on the construction and characterization of solutions of the Einstein field equations. He earned his doctorate in physics from Hamburg University in 1958.
Source: Wikipedia