NASA astronaut Sunni Williams, one-half Boeing Starliner crew who have been stuck on the International Space Station for months, took part in a spacewalk on Thursday to do some repairs to the orbiting laboratory.

Her return to Earth is delayed until late March 2025.

NASA’s SpaceX Crew 9 cannot return unless Crew 10 — its replacement — is launched into space. Here’s all you need to know about Sunita Williams’s space mission.