The Western European nations decided to have two agencies: one concerned with developing a launch system, ELDO (European Launch Development Organization), and the other the precursor of the European Space Agency, ESRO (European Space Research Organisation).
Euroopa riigid otsustasid luua kaks eraldi agentuuri, millest üks – ELDO (European Launch Development Organisation) – keskenduks kanderaketi arendamisele, teine – ESRO (European Space Research Organisation – praeguse kosmoseagentuuri eelkäija) – aga kosmoselaeva väljatöötamisele.