PARIS — Satellite in-orbit-servicing startup Effective Space Solutions of Britain and Israel on Jan. 17 said it had signed a contract to launch two of its refueling drones to two satellites owned by a single fleet operator in 2020.

The contract, valued at more than $100 million, has an implied value of more than $50 million for each satellite refueling effort, which the company has said typically will last around five years.

Each drone then will leave the customers’ satellites and go on to perform a . . .

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