NASA said on Wednesday it was postponing a spacewalk that was scheduled for Thursday, citing a “medical concern” with one of the crew members. The space agency did not name the astronaut involved but confirmed later the issue was related to a “single crew member who is stable” and officials are considering next steps.

Two NASA astronauts were planning to conduct a spacewalk outside the International Space Station on Thursday, but now, it appears they may be coming home early.

NASA said the unidentified astronaut is 'stable," but the agency is considering all options, including a possible early return to Earth for Crew 11

NASA did not identify the crew member or provide details on the medical concern, citing privacy issues in a brief blog post.

NASA astronauts are preparing for two spacewalks to complete tasks outside the International Space Station. Here's what we know about the mission.

NASA is considering the early return of Crew-11 from the International Space Station after an unidentified astronaut experienced a medical problem.

A NASA spokeswoman said the astronaut with the medical concern, whom she did not identify, was in a stable condition on the orbiting laboratory.

On Thursday, a pair of astronauts will venture outside the space station to prepare for the future installation of roll-out solar arrays that will help power its deorbit in 2030.

NASA could bring a space crew aboard the International Space Station back to Earth earlier than planned following a medical issue, according to an update obtained by PEOPLE on Thursday, Jan. 8.

NASA has postponed a planned Jan. 8 spacewalk outside the International Space Station due to a "medical concern" with an unnamed crew member.

Two NASA astronauts were scheduled to complete a six-and-a-half-hour spacewalk on January 8, but the agency has postponed it indefinitely