70th International Astronautical Congress Dr Johann-Dietrich Worner, Director General, European Space Agency (ESA), answers a question during a Heads of Agency interactive session with students at the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington.

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Keywords: ., 70th, agency, astronautical, aubrey, center, congress, convention, dc, european, gemignani, international, johann-dietrich, nasa, space, walter, washington, worner