NASA has postponed a planned spacewalk on the International Space Station after a medical concern arose involving a single member of the Crew-11 mission. In a statement issued Wednesday, NASA said the situation is stable but confirmed it is actively evaluating all options, including the possibility of ending the Crew-11 mission earlier than planned. The agency stressed that astronaut safety remains its highest priority.The spacewalk, which was scheduled to take place on Thursday aboard the International Space Station, has been postponed while mission teams continue to monitor the crew member’s condition. NASA said the medical issue emerged Wednesday afternoon and declined to provide further details, citing medical privacy. Additional updates, including a revised timeline for the spacewalk, are expected within the next 24 hours.Crew-11 launched to the ISS in August 2025 for a mission originally slated to last about six months. While NASA has not confirmed whether an early return will be required, officials said the agency and its international partners routinely train for medical contingencies in orbit and are prepared to respond as needed.The Crew-11 mission is part of NASA’s ongoing effort to maintain a continuous human presence aboard the ISS. During their stay, the astronauts are carrying out scientific research, technology demonstrations and routine station maintenance, while also supporting preparations for future missions. The crew was expected to remain in orbit until mid-February 2026, though that timeline is now under review following the medical situation.