SpaceX flew a first demonstration of its new crew vehicle last year 2019, but that had only a dummy aboard. This sortie is the first to carry humans. Hurley's and Behnken's job on the mission is to test all onboard systems and to give their feedback to engineers. SpaceX and Nasa need a clean crewed demonstration so they can move swiftly to the next phase of the company's $2.6bn (£2.1bn) contract, which will encompass six astronaut "taxi" flights, with the first of these likely to occur at the end of August 2020.




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