The Director General of the European Space Agency is the highest ranked official of the ESA, and there have been four ESRO Director Generals including Pierre Auger and Herm Bondi.
The Director General of the European Space Agency is the highest-ranked official of the European Space Agency (ESA), a space agency formed by the collaboration of prominent European nations. AugerDr. Pierre Auger BondiSir Herman Bondi HockerDr. Alexander Hocker GibsonDr. Roy Gibson 
