Produced by: Tarun Mishra
NASA's Crew Flight Test astronauts Sunita Williams and Butch Wilmore have been aboard Boeing's Starliner spacecraft, docked at the ISS since June 6. Originally scheduled to return on June 14, their mission has been extended for further testing.
Despite concerns, NASA officials emphasize that the astronauts are not stranded and can return to Earth when necessary. The extended mission allowed for additional tests not feasible on Earth.
On July 27, Boeing conducted a successful in-space test of the Starliner's Reaction Control System (RCS) thrusters and helium system. The test involved 27 of the spacecraft's 28 thrusters, providing promising results for the spacecraft's readiness for return.
During the tests, Williams and Wilmore remained safely onboard the Starliner Calypso, offering real-time feedback. They will also participate in undock-to-landing simulations soon.
Although no official landing date has been set, NASA and Boeing are evaluating undocking opportunities throughout August. The results from the recent tests will inform the agency's readiness review and final return schedule.
NASA and SpaceX are preparing for the Crew-9 mission to the ISS, scheduled for no earlier than August 18. This adds urgency to the Starliner's departure to free up docking ports for the incoming mission.
The ISS has six docking ports, but only two are available on the U.S. segment. Currently, these ports are occupied by SpaceX's Crew Dragon Endeavour and Boeing's Starliner, necessitating Starliner's undocking before Crew-9's arrival.
The successful tests and preparations for Williams and Wilmore's return are positive developments, yet pressure remains high due to the tight timeline and potential impacts on subsequent missions.