LE BOURGET, France — The European Space Agency on June 22 signed a long-expected contract with OHB SE of Germany for eight more Galileo positioning, timing and navigation satellites, a contract that is about eight months late.

Valued at 324 million euros ($361 million), the contract stipulates that the eight spacecraft will be ready for launch by 2020, the date Galileo’s owner, the European Union’s executive commission, has set for full Galileo system service.

The contract, expected in late 2016, was delayed as the commission and the . . .

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