PARIS — The underlying tensions between the European Commission and the European Space Agency (ESA) have been laid bare in a commission document preparing its space strategy and ESA Director-General Jan Woerner’s written response to it.

The document is the commission’s proposal for establishing the European Union’s new space priorities, and the creation of the European Union Agency for the Space Programme.

For ESA, the proposal validates every nightmare it has had about the commission’s growing space ambition. The commission is now ESA’s biggest . . .

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