Boeing Starliner capsule returns from ISS on Friday night

Boeing's Starliner capsule is concluding its nearly three-month mission at the International Space Station (ISS) and is set to undock on Friday evening. The capsule will return to Earth uncrewed due to concerns about its ability to maintain orientation during re-entry, which arose from issues encountered during its initial flight. NASA decided to prioritize safety by opting for an uncrewed return, with astronauts Suni Williams and Butch Wilmore remaining aboard the ISS until they can return on a SpaceX capsule in February 2025. The Starliner is notable for being the first U.S.-made capsule designed to land on solid ground rather than splash down in the ocean. During its return, the capsule will utilize a combination of 28 RCS thrusters and 20 more powerful OMAC thrusters to help maintain its orientation. However, there are concerns about potential failures, particularly related to helium leaks affecting the OMAC thrusters. Despite Boeing's previous confidence in the capsule's ability to return with crew, NASA's decision reflects a cautious approach to risk management. The agency has not yet determined whether Boeing will need to conduct another test flight or if the current mission will lead to certification for regular crewed flights. This mission follows a previous uncrewed test flight in 2019 that faced software issues, necessitating a repeat in 2022. The outcome of this return trip will be critical in assessing the Starliner's readiness for future crewed missions.