Record-Setting NASA Astronaut Returns to Earth Record-setting NASA astronaut Christina Koch has returned to her home planet after an incredible 328 days in orbit—the second-longest single trip into space by an American astronaut. During those 11 months among the stars, Koch took part in the first three all-woman spacewalks, “completed 5,248 orbits of the Earth and a journey of 139 million miles, roughly the equivalent …
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