Years ago, SpaceX, one of two U.S. companies hired by NASA to fly crew to the International Space Station (ISS), unveiled plans to fuel its rocket after astronauts are aboard, sparking a chorus of warnings from safety experts concerned that the practice, known as “load and go,” would pose unnecessary additional risk.  Now as SpaceX progresses toward its first Commercial Crew test flight, NASA advisors are cautiously optimistic that load and go is a viable option. “It ...


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