UPDATE DEC. 30: This story was updated to add the UK government's Dec. 29 statement about its future involvement in Copernicus.

POCÉ SUR CISSE, France — The EU-UK Brexit agreement opens the door to continued British participation in the EU’s Copernicus satellite-based environment-monitoring system and the Space Surveillance and Tracking program that the EU has inserted into its 2021-2027 budget.

How much the British will be investing in these programs, and in the EU’s Horizon Europe research program, will . . .

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