NASA cancels ISS spacewalk after onboard medical issue

NASA canceled a scheduled ISS spacewalk after an unnamed astronaut experienced a medical issue; the crew member is reported stable and the agency is evaluating options, including an earlier end to Crew-11's mission.

NASA canceled a planned spacewalk on Thursday after a medical issue was reported aboard the International Space Station. The agency said an unnamed crew member experienced a medical concern and is being monitored, and described the crew member as stable. NASA announced it is actively evaluating all options, including the possibility of returning Crew-11 early, and cited medical privacy for not releasing further details. Current known details: - A medical concern with an unnamed astronaut was reported Wednesday afternoon, and the scheduled spacewalk was postponed. - NASA reports the crew member is stable and says it is "actively evaluating all options," including an earlier end to Crew-11's mission. - Crew-11 has been aboard since August 2025 and was scheduled to return around late February 2026; any change to that plan is under review. Summary: The immediate impact was the cancellation of the planned spacewalk and a pause in extravehicular activity. NASA is assessing whether the affected astronaut can remain in orbit or should return with Crew-11 earlier than planned. Undetermined at this time.