About the author

Jan Wörner

The Jan Wörner blog is written by the Chairman of the Executive Board of the German Aerospace Center, Johann-Dietrich ‘Jan’ Wörner – no hype! Jan Wörner writes all the posts himself and the gives then to DLR Corporate Communications for editing, picture research and online publication.
Johann-Dietrich Wörner was born in Kassel in 1954. He has been Chairman of the Executive Board of the German Aerospace Center since 1 March 2007.

Wörner studied civil engineering at the Technische Universität Berlin and the Technische Hochschule Darmstadt, from where he graduated in 1985. In 1982, as part of his studies, he spent two years in Japan, investigating earthquake safety. Until 1990 Wörner worked for the consulting civil engineers König und Heunisch. In 1990 he returned to Darmstadt University, where he was appointed to a professorship in Civil Engineering and took over as Head of the Testing and Research Institute. Before being elected President of the Technische Universität Darmstadt in 1995, he held the position of Dean of the Civil Engineering Faculty.
 

Posts from Jan Wörner

Jan Wörner Blog | 26. October 2011 | 1 Comment

Lehren aus dem Ende der ROSAT-Mission

Der deutsche Forschungssatellit ROSAT wurde am 1. Juni 1990 mit einer Delta II-Trägerrakete gestartet und hat neun Jahre lang erfolgreich das Weltall nach Röntgenquellen durchmustert. Die Erfolgsbilanz reicht von der Entdeckung zigtausender Röntgenquellen und der Analyse von Galaxienhaufen, Röntgendoppelsternen und Schwarzen Löchern bis hin zur Entdeckung der Reflexion von Röntgenstrahlung der Sonne durch den Mond. Die Erkenntnisse der an der Mission beteiligten Wissenschaftler erschienen in mehr als 7000 Publikationen. Nach nun insgesamt 21 Jahren im Erdorbit ist ROSAT über dem Golf von Bengalen in die Erdatmosphäre wiedereingetreten. Ob Teile die Erdoberfläche erreicht haben, ist nicht bekannt.

read more

Jan Wörner Blog | 26. October 2011 | 1 Comment

Lessons from the end of the ROSAT mission

The German ROSAT research satellite was launched on 1 June 1990 on a Delta II launcher and successfully scanned space for X-ray sources for nine years. Its record of achievements extends from discovering countless X-ray sources to analysing galactic clusters, X-ray binary stars and black holes to discovering the reflection of the Sun's X-ray radiation by the Moon. The findings by the scientists involved in the mission have appeared in over 7000 publications. After orbiting Earth for 21 years, ROSAT re-entered the atmosphere over the Bay of Bengal. It is not known whether any parts reached the Earth's surface. read more