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The European Space Research Organisation is established in Paris – later becoming the European Space Agency.

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European Space Research Organisation
International organisation (1964-75); predecessor to the European Space Agency
The European Space Research Organisation (ESRO) was an international organisation founded by 10 European nations with the intention of jointly pursuing scientific research in space. It was founded in 1964. As an organisation ESRO was based on a previously existing international…Source: Wikipedia (CC BY-SA)
European Space Agency
European organisation dedicated to space exploration
The European Space Agency (ESA) is a 23-member international organization devoted to space exploration. With its headquarters in Paris and a staff of around 2,547 people globally as of 2023, ESA was founded in 1975 in the context of European integration. Its 2025 annual budget…Source: Wikipedia (CC BY-SA)