Nasa: NASA postponed a spacewalk scheduled for Thursday outside the International Space Station (ISS) due to a 'medical concern' with a crew member. "The agency is monitoring a medical concern with a crew member that arose Wednesday afternoon aboard the orbital complex," the US space agency said in a statement late Wednesday.

According to Anadolu Agency - English, NASA did not share further details due to medical privacy, but added: "The situation is stable." NASA stated in a later announcement that it is "evaluating all options," including an early return for the crew. They emphasized that these are scenarios NASA and its partners train for and prepare to handle safely.

The agency assured that additional details will be shared within 24 hours, including a new date for the spacewalk. NASA had previously mentioned that Expedition 74, which began on December 8 and is set to conclude this summer, was making final preparations for the year's first spacewalk.

Station Commander Mike Fincke and Flight Engineer Zena Cardman were scheduled to conduct their mission's first spacewalk on Thursday. The spacewalk was intended to last about 6 1/2 hours, focusing on supporting solar array upgrades and performing routine maintenance as part of power channel preparations for new solar arrays.