In this Aug. 17, 2021 photo made available by NASA, astronaut and Expedition 65 Flight Engineer Mark Vande Hei inspects a spacesuit in preparation for a spacewalk at the International Space Station. On Monday, Aug. 23, NASA announced it is delaying a spacewalk this week because of an undisclosed medical issue involving Vande Hei. (NASA via AP) (Uncredited)
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