NASA Weighs Early ISS Crew Return After Medical Issue Cancels Spacewalk NASA is considering an unusually early return of an International Space Station crew member after cancelling a planned spacewalk due to a medical concern. The move matters as it underscores the agency’s cautious approach to astronaut health and mission safety in orbit. NASA said the issue involves one astronaut whose condition is stable aboard the ISS, prompting the agency to halt a spacewalk scheduled for Thursday while assessments continue.

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