1975: On 30 May 1975, the text of the ESA Convention was approved by the Conference of Plenipotentiaries in Paris.
The European Space Agency began operations on the following day, 31 May 1975. However, the ESA Convention only officially entered into force on 30 October 1980, when France deposited its instrument of ratification.
Modh meán
28 May
27 May
26 May
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